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Kanji
Kanji written in kanji with furigana
Script type	Logographic
Time period	5th century AD – present
Direction	Vertical right-to-left, left-to-right
Languages	Old Japanese, Kanbun, Japanese, Ryukyuan languages, Hachijō
Related scripts
Parent systems	Oracle bone script Seal script Clerical script Regular script Kanji
Sister systems	Hanja, zhuyin, traditional Chinese, simplified Chinese, chữ Hán, chữ Nôm, Khitan script, Jurchen script, Tangut script, Yi script
ISO 15924
ISO 15924	Hani (500), ​Han (Hanzi, Kanji, Hanja)
Unicode
Unicode alias	Han
This article contains phonetic transcriptions in the International Phonetic Alphabet (IPA). For an introductory guide on IPA symbols, see Help:IPA. For the distinction between , / / and ⟨ ⟩, see IPA § Brackets and transcription delimiters.

Kanji (漢字, Japanese pronunciation: [kaɲdʑi]) are the logographic Chinese characters adapted from the Chinese script used in the writing of Japanese. They were made a major part of the Japanese writing system during the time of Old Japanese and are still used, along with the subsequently-derived syllabic scripts of hiragana and katakana. The characters have Japanese pronunciations; most have two, with one based on the Chinese sound. A few characters were invented in Japan by constructing character components derived from other Chinese characters. After the Meiji Restoration, Japan made its own efforts to simplify the characters, now known as shinjitai, by a process similar to China's simplification efforts, with the intention to increase literacy among the general public. Since the 1920s, the Japanese government has published character lists periodically to help direct the education of its citizenry through the myriad Chinese characters that exist. There are nearly 3,000 kanji used in Japanese names and in common communication.

The term kanji in Japanese literally means "Han characters". It is written in Japanese by using the same characters as in traditional Chinese, and both refer to the character writing system known in Chinese as hanzi (traditional Chinese: 漢字; simplified Chinese: 汉字; pinyin: hànzì; lit. 'Han characters'). The significant use of Chinese characters in Japan first began to take hold around the 5th century AD and has since had a profound influence in shaping Japanese culture, language, literature, history, and records. Inkstone artifacts at archaeological sites dating back to the earlier Yayoi period were also found to contain Chinese characters.

Although some characters, as used in Japanese and Chinese, have similar meanings and pronunciations, others have meanings or pronunciations that are unique to one language or the other. For example, 誠 means 'honest' in both languages but is pronounced makoto or sei in Japanese, and chéng in Standard Mandarin Chinese. Individual kanji characters and multi-kanji words invented in Japan from Chinese morphemes have been borrowed into Chinese, Korean, and Vietnamese in recent times. These are known as Wasei-kango, or Japanese-made Chinese words. For example, the word for telephone, 電話 denwa in Japanese, was derived from the Chinese words for "electric" and "conversation." It was then calqued as diànhuà in Mandarin Chinese, điện thoại in Vietnamese and 전화 jeonhwa in Korean.

Japanese writing
Components
Kanji Stroke order Radicals Jōyō kanji list Kyōiku kanji Tōyō kanji Jinmeiyō kanji Hyōgai kanji
Kana Hiragana Hentaigana Katakana Man'yōgana Sōgana Gojūon
Typographic symbols Japanese punctuation Iteration mark
Uses
Syllabograms Furigana Okurigana Braille
Transliteration
Rōmaji Hepburn Kunrei-shiki / ISO 3602 Nihon-shiki JSL Wāpuro (keyboard input)
Cyrillization Polivanov system
v t e

Chinese characters
Chinese family of scripts Written Chinese Kanji Hanja Chữ Hán
Evolution of script styles Neolithic symbols in China Oracle bone Bronze Seal Large Small Bird-worm Clerical Cursive Semi-cursive Regular Flat brush Modern typefaces Fangsong Ming Hei
Properties and classification Components Strokes order Radicals Orthography jiu zixing xin zixing Digital encoding
Collation and standards Kangxi Dictionary forms (1716) Commonly Used Characters (PRC, 2013) Commonly-Used Characters (Hong Kong, 2007) Nan Min Recommended Characters (Taiwan, 2009) Standard Form of National Characters (Taiwan, 1982) Jōyō kanji (Japan, 2010)
Reforms Simplified characters second round Traditional characters debate Japanese script reform kyūjitai
Homographs and readings Literary and colloquial readings Kanbun Idu
Variants Zetian characters
Derived systems Kana man'yōgana hiragana katakana Jurchen script Khitan large small Nüshu Bopomofo Slavonic transcription
Transliteration of Chinese
v t e

History

Chinese characters first came to Japan on official seals, letters, swords, coins, mirrors, and other decorative items imported from China. The earliest known instance of such an import was the King of Na gold seal given by Emperor Guangwu of Han to a Wa emissary in 57 AD. Chinese coins as well as inkstones from the first century AD have also been found in Yayoi period archaeological sites. However, the Japanese people of that era probably had little to no comprehension of the script, and they would remain relatively illiterate until the fifth century AD, when writing in Japan became more widespread. According to the Nihon Shoki and Kojiki, a semi-legendary scholar called Wani was dispatched to Japan by the Kingdom of Baekje during the reign of Emperor Ōjin in the early fifth century, bringing with him knowledge of Confucianism and Chinese characters.

The earliest Japanese documents were probably written by bilingual Chinese or Korean officials employed at the Yamato court. For example, the diplomatic correspondence from King Bu of Wa to Emperor Shun of Liu Song in 478 AD has been praised for its skillful use of allusion. Later, groups of people called fuhito were organized under the monarch to read and write Classical Chinese. During the reign of Empress Suiko (593–628), the Yamato court began sending full-scale diplomatic missions to China, which resulted in a large increase in Chinese literacy at the Japanese court.

In ancient times, paper was so rare that people wrote kanji onto thin, rectangular strips of wood, called mokkan (木簡). These wooden boards were used for communication between government offices, tags for goods transported between various countries, and the practice of writing. The oldest written kanji in Japan discovered so far were written in ink on wood as a wooden strip dated to the 7th century, a record of trading for cloth and salt.

The Japanese language had no written form at the time Chinese characters were introduced, and texts were written and read only in Chinese. Later, during the Heian period (794–1185), a system known as kanbun emerged, which involved using Chinese text with diacritical marks to allow Japanese speakers to read Chinese sentences and restructure them into Japanese on the fly, by changing word order and adding particles and verb endings, in accordance with the rules of Japanese grammar. This was essentially a kind of codified sight translation.

Chinese characters also came to be used to write texts in the vernacular Japanese language, resulting in the modern kana syllabaries. Around 650 AD, a writing system called man'yōgana (used in the ancient poetry anthology Man'yōshū) evolved that used a number of Chinese characters for their sound, rather than for their meaning. Man'yōgana written in cursive style evolved into hiragana (literally "fluttering kana" in reference to the motion of the brush during cursive writing), or onna-de, that is, "ladies' hand", a writing system that was accessible to women (who were denied higher education). Major works of Heian-era literature by women were written in hiragana. Katakana (literally "partial kana", in reference to the practice of using a part of a kanji character) emerged via a parallel path: monastery students simplified man'yōgana to a single constituent element. Thus the two other writing systems, hiragana and katakana, referred to collectively as kana, are descended from kanji. In contrast with kana (仮名, literally "borrowed name", in reference to the character being "borrowed" as a label for its sound), kanji are also called mana (真名, literally "true name", in reference to the character being used as a label for its meaning).

In modern Japanese, kanji are used to write certain words or parts of words (usually content words such as nouns, adjective stems, and verb stems), while hiragana are used to write inflected verb and adjective endings, phonetic complements to disambiguate readings (okurigana), particles, and miscellaneous words which have no kanji or whose kanji are considered obscure or too difficult to read or remember. Katakana are mostly used for representing onomatopoeia, non-Japanese loanwords (except those borrowed from ancient Chinese), the names of plants and animals (with exceptions), and for emphasis on certain words.

Orthographic reform and lists of kanji

Since ancient times, there has been a strong opinion in Japan that kanji is the orthodox form of writing, but there were also people who argued against it. Kamo no Mabuchi, a scholar of the Edo period, criticized the large number of characters in kanji. He also appreciated the small number of characters in kana characters and argued for the limitation of kanji.

After the Meiji Restoration and as Japan entered an era of active exchange with foreign countries, the need for script reform in Japan began to be called for. Some scholars argued for the abolition of kanji and the writing of Japanese using only kana or Latin characters. However, these views were not so widespread.

However, the need to limit the number of kanji characters was understood, and in May 1923, the Japanese government announced 1,962 kanji characters for regular use. In 1940, the Japanese Army decided on the "Table of Restricted Kanji for Weapons Names" (兵器名称用制限漢字表, heiki meishō yō seigen kanji hyō) which limited the number of kanji that could be used for weapons names to 1,235. In 1942, the National Language Council announced the "Standard Kanji Table" (標準漢字表, hyōjun kanji-hyō) with a total of 2,528 characters, showing the standard for kanji used by ministries and agencies and in general society.

In 1946, after World War II and under the Allied Occupation of Japan, the Japanese government, guided by the Supreme Commander of the Allied Powers, instituted a series of orthographic reforms, to help children learn and to simplify kanji use in literature and periodicals.

The number of characters in circulation was reduced, and formal lists of characters to be learned during each grade of school were established. Some characters were given simplified glyphs, called shinjitai (新字体). Many variant forms of characters and obscure alternatives for common characters were officially discouraged.

These are simply guidelines, so many characters outside these standards are still widely known and commonly used; these are known as hyōgaiji (表外字).

Kyōiku kanji

The kyōiku kanji (教育漢字, lit. "education kanji") are the 1,026 first kanji characters that Japanese children learn in elementary school, from first grade to sixth grade. The grade-level breakdown is known as the gakunen-betsu kanji haitōhyō (学年別漢字配当表), or the gakushū kanji (学習漢字). This list of kanji is maintained by the Japanese Ministry of Education and prescribes which kanji characters and which kanji readings students should learn for each grade.

Jōyō kanji

The jōyō kanji (常用漢字, regular-use kanji) are 2,136 characters consisting of all the kyōiku kanji, plus 1,110 additional kanji taught in junior high and high school. In publishing, characters outside this category are often given furigana. The jōyō kanji were introduced in 1981, replacing an older list of 1,850 characters known as the tōyō kanji (当用漢字, general-use kanji), introduced in 1946. Originally numbering 1,945 characters, the jōyō kanji list was expanded to 2,136 in 2010. Some of the new characters were previously jinmeiyō kanji; some are used to write prefecture names: 阪, 熊, 奈, 岡, 鹿, 梨, 阜, 埼, 茨, 栃 and 媛.

Jinmeiyō kanji

As of September 25, 2017, the jinmeiyō kanji (人名用漢字, kanji for use in personal names) consists of 863 characters. Kanji on this list are mostly used in people's names and some are traditional variants of jōyō kanji. There were only 92 kanji in the original list published in 1952, but new additions have been made frequently. Sometimes the term jinmeiyō kanji refers to all 2,999 kanji from both the jōyō and jinmeiyō lists combined.

Hyōgai kanji

Hyōgai kanji (表外漢字, "unlisted characters") are any kanji not contained in the jōyō kanji and jinmeiyō kanji lists. These are generally written using traditional characters, but extended shinjitai forms exist.

Japanese Industrial Standards for kanji

The Japanese Industrial Standards for kanji and kana define character code-points for each kanji and kana, as well as other forms of writing such as the Latin alphabet, Cyrillic script, Greek alphabet, Arabic numerals, etc. for use in information processing. They have had numerous revisions. The current standards are:

• JIS X 0208, the most recent version of the main standard. It has 6,355 kanji.
• JIS X 0212, a supplementary standard containing a further 5,801 kanji. This standard is rarely used, mainly because the common Shift JIS encoding system could not use it. This standard is effectively obsolete.
• JIS X 0213, a further revision which extended the JIS X 0208 set with 3,695 additional kanji, of which 2,743 (all but 952) were in JIS X 0212. The standard is in part designed to be compatible with Shift JIS encoding.
• JIS X 0221:1995, the Japanese version of the ISO 10646/Unicode standard.

Gaiji

Gaiji (外字, literally "external characters") are kanji that are not represented in existing Japanese encoding systems. These include variant forms of common kanji that need to be represented alongside the more conventional glyph in reference works and can include non-kanji symbols as well.

Gaiji can be either user-defined characters, system-specific characters or third-party add-on products. Both are a problem for information interchange, as the code point used to represent an external character will not be consistent from one computer or operating system to another.

Gaiji were nominally prohibited in JIS X 0208-1997 where the available number of code-points was reduced to only 940. JIS X 0213-2000 used the entire range of code-points previously allocated to gaiji, making them completely unusable. Most desktop and mobile systems have moved to Unicode negating the need for gaiji for most users. Nevertheless, they persist today in Japan's three major mobile phone information portals, where they are used for emoji (pictorial characters).

Unicode allows for optional encoding of gaiji in private use areas, while Adobe's SING (Smart INdependent Glyphlets) technology allows the creation of customized gaiji.

The Text Encoding Initiative uses a ⟨g⟩ element to encode any non-standard character or glyph, including gaiji. The g stands for gaiji.

Total number of kanji

There is no definitive count of kanji characters, just as there is none of Chinese characters generally. The Dai Kan-Wa Jiten, which is considered to be comprehensive in Japan, contains about 50,000 characters. The Zhonghua Zihai, published in 1994 in China, contains about 85,000 characters, but the majority of them are not in common use in any country, and many are obscure variants or archaic forms.

A list of 2,136 jōyō kanji is regarded as necessary for functional literacy in Japanese. Approximately a thousand more characters are commonly used and readily understood by the majority in Japan and a few thousand more find occasional use, particularly in specialized fields of study but those may be obscure to most out of context. A total of 13,108 characters can be encoded in various Japanese Industrial Standards for kanji.

Readings

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Individual kanji may be used to write one or more different words or morphemes, leading to different pronunciations or "readings." The correct reading is determined by contextual cues (such as whether the character represents part of a compound word versus an independent word), the exact intended meaning of the word, and its position within the sentence. For example, 今日 is mostly read kyō, meaning "today", but in formal writing it is instead read konnichi, meaning "nowadays", which is understood from context. Furigana is used to specify ambiguous readings, such as rare, literary, or otherwise non-standard readings. This ambiguity may arise due to more than one reading becoming activated in the brain.

Kanji readings are categorized as either on'yomi (音読み, literally "sound reading"), from Chinese, or kun'yomi (訓読み, literally "meaning reading"), native Japanese, and most characters have at least two readings—at least one of each.

However, some characters have only a single reading, such as kiku (菊, "chrysanthemum", an on-reading) or iwashi (鰯, "sardine", a kun-reading); kun-only are common for Japanese-coined kanji (kokuji).

Some common kanji have ten or more possible readings; the most complex common example is 生, which is read as sei, shō, nama, ki, o-u, i-kiru, i-kasu, i-keru, u-mu, u-mareru, ha-eru, and ha-yasu, totaling eight basic readings (the first two are on, while the rest are kun), or 12 if related verbs are counted as distinct.

On'yomi (Sino-Japanese reading)

The on'yomi (音読み, [oɰ̃jomi], lit. "sound(-based) reading"), the Sino-Japanese reading, is the modern descendant of the Japanese approximation of the base Chinese pronunciation of the character at the time it was introduced. It was often previously referred to as translation reading, as it was recreated readings of the Chinese pronunciation but was not the Chinese pronunciation or reading itself, similar to the English pronunciation of Latin loanwords. There also exist kanji created by the Japanese and given an on'yomi reading despite not being a Chinese-derived or a Chinese-originating character. Some kanji were introduced from different parts of China at different times, and so have multiple on'yomi, and often multiple meanings. Kanji invented in Japan (kokuji) would not normally be expected to have on'yomi, but there are exceptions, such as the character 働 "to work", which has the kun'yomi "hatara(ku)" and the on'yomi "dō", and 腺 "gland", which has only the on'yomi "sen"—in both cases these come from the on'yomi of the phonetic component, respectively 動 "dō" and 泉 "sen".

Kun'yomi (native reading)

The kun'yomi (訓読み, [kɯɰ̃jomi], lit. "meaning reading"), the native reading, is a reading based on the pronunciation of a native Japanese word, or yamato kotoba, that closely approximated the meaning of the Chinese character when it was introduced. As with on'yomi, there can be multiple kun'yomi for the same kanji, and some kanji have no kun'yomi at all.

Ateji

Ateji (当て字) are characters used only for their sounds. In this case, pronunciation is still based on a standard reading, or used only for meaning (broadly a form of ateji, narrowly jukujikun). Therefore, only the full compound—not the individual character—has a reading. There are also special cases where the reading is completely different, often based on a historical or traditional reading.

The analogous phenomenon occurs to a much lesser degree in Chinese varieties, where there are literary and colloquial readings of Chinese characters—borrowed readings and native readings. In Chinese these borrowed readings and native readings are etymologically related, since they are between Chinese varieties (which are related), not from Chinese to Japanese (which are not related). They thus form doublets and are generally similar, analogous to different on'yomi, reflecting different stages of Chinese borrowings into Japanese.

Gairaigo

Longer readings exist for non-Jōyō characters and non-kanji symbols, where a long gairaigo word may be the reading (this is classed as kun'yomi—see single character gairaigo, below)—the character 糎 has the seven kana reading センチメートル senchimētoru "centimeter", though it is generally written as "cm" (with two half-width characters, so occupying one space); another common example is '%' (the percent sign), which has the five kana reading パーセント pāsento.

Mixed readings

There are many kanji compounds that use a mixture of on'yomi and kun'yomi, known as jūbako (重箱, multi-layered food box) or yutō (湯桶, hot liquid pail) words (depending on the order), which are themselves examples of this kind of compound (they are autological words): the first character of jūbako is read using on'yomi, the second kun'yomi (on-kun, Japanese: 重箱読み). It is the other way around with yu-tō (kun-on, Japanese: 湯桶読み).

Formally, these are referred to as jūbako-yomi (重箱読み, jūbako reading) and yutō-yomi (湯桶読み, yutō reading). In both these words, the on'yomi has a long vowel; long vowels in Japanese generally are derived from sound changes common to loans from Chinese, hence distinctive of on'yomi. These are the Japanese form of hybrid words. Other examples include basho (場所, "place", kun-on, 湯桶読み), kin'iro (金色, "golden", on-kun, 重箱読み) and aikidō (合気道, the martial art Aikido", kun-on-on, 湯桶読み).

Ateji often use mixed readings. For instance, the city of Sapporo (サッポロ), whose name derives from the Ainu language and has no meaning in Japanese, is written with the on-kun compound Error: {{Lang}}: invalid parameter: |4= (help) (which includes sokuon as if it were a purely on compound).

Special readings

Gikun (義訓) and jukujikun (熟字訓) are readings of kanji combinations that have no direct correspondence to the characters' individual on'yomi or kun'yomi. From the point of view of the character, rather than the word, this is known as a nankun (難訓, "difficult reading"), and these are listed in kanji dictionaries under the entry for the character.

Gikun are other readings assigned to a character instead of its standard readings. An example is reading 寒 (meaning "cold") as fuyu ("winter") rather than the standard readings samu or kan, and instead of the usual spelling for fuyu of 冬. Another example is using 煙草 (lit. "smoke grass") with the reading tabako ("tobacco") rather than the otherwise-expected readings of *kemuri-gusa or *ensō. Some of these, such as for tabako, have become lexicalized, but in many cases this kind of use is typically non-standard and employed in specific contexts by individual writers. Aided with furigana, gikun could be used to convey complex literary or poetic effect (especially if the readings contradict the kanji), or clarification if the referent may not be obvious.

Jukujikun are when the standard kanji for a word are related to the meaning, but not the sound. The word is pronounced as a whole, not corresponding to sounds of individual kanji. For example, 今朝 ("this morning") is jukujikun. This word is not read as *ima'asa, the expected kun'yomi of the characters, and only infrequently as konchō, the on'yomi of the characters. The most common reading is kesa, a native bisyllabic Japanese word that may be seen as a single morpheme, or as a compound of ke (“this”, as in kefu, the older reading for 今日, “today”), and asa, “morning”. Likewise, 今日 ("today") is also jukujikun, usually read with the native reading kyō; its on'yomi, konnichi, does occur in certain words and expressions, especially in the broader sense "nowadays" or "current", such as 今日的 ("present-day"), although in the phrase konnichi wa ("good day"), konnichi is typically spelled wholly with hiragana rather than with the kanji 今日.

Jukujikun are primarily used for some native Japanese words, such as Yamato (大和 or 倭, the name of the dominant ethnic group of Japan, a former Japanese province as well as ancient name for Japan), and for some old borrowings, such as 柳葉魚 (shishamo, literally "willow leaf fish") from Ainu, 煙草 (tabako, literally “smoke grass”) from Portuguese, or 麦酒 (bīru, literally “wheat alcohol”) from Dutch, especially if the word was borrowed before the Meiji period. Words whose kanji are jukujikun are often usually written as hiragana (if native), or katakana (if borrowed); some old borrowed words are also written as hiragana, especially Portuguese loanwords such as かるた (karuta) from Portuguese "carta" (English “card”) or てんぷら (tempura) from Portuguese "tempora" (English “times, season”), as well as たばこ (tabako).

Sometimes, jukujikun can even have more kanji than there are syllables, examples being kera (啄木鳥, “woodpecker”), gumi (胡頽子, “silver berry, oleaster”), and Hozumi (八月朔日, a surname). This phenomenon is observed in animal names that are shortened and used as suffixes for zoological compound names, for example when 黄金虫, normally read as koganemushi, is shortened to kogane in 黒黄金虫 kurokogane, although zoological names are commonly spelled with katakana rather than with kanji. Outside zoology, this type of shortening only occurs on a handful of words, for example 大元帥 daigen(sui), or the historical male name suffix 右衛門 -emon, which was shortened from the word uemon.

The kanji compound for jukujikun is often idiosyncratic and created for the word, and there is no corresponding Chinese word with that spelling. In other cases, a kanji compound for an existing Chinese word is reused, where the Chinese word and on'yomi may or may not be used in Japanese. For example, 馴鹿 (“reindeer”) is jukujikun for tonakai, from Ainu, but the on'yomi reading of junroku is also used. In some cases, Japanese coinages have subsequently been borrowed back into Chinese, such as 鮟鱇 (ankō, “monkfish”).

The underlying word for jukujikun is a native Japanese word or foreign borrowing, which either does not have an existing kanji spelling (either kun'yomi or ateji) or for which a new kanji spelling is produced. Most often the word is a noun, which may be a simple noun (not a compound or derived from a verb), or may be a verb form or a fusional pronunciation. For example, the word 相撲 (sumō, “sumo”) is originally from the verb 争う (sumau, “to vie, to compete”), while 今日 (kyō, “today”) is fusional (from older ke, “this” + fu, “day”).

In rare cases, jukujikun is also applied to inflectional words (verbs and adjectives), in which case there is frequently a corresponding Chinese word. The most common example of an inflectional jukujikun is the adjective 可愛い (kawai-i, “cute”), originally kawafayu-i; the word (可愛) is used in Chinese, but the corresponding on'yomi is not used in Japanese. By contrast, "appropriate" can be either 相応しい (fusawa-shii, as jukujikun) or 相応 (sōō, as on'yomi). Which reading to use can be discerned by the presence or absence of the -shii ending (okurigana). A common example of a verb with jukujikun is 流行る (haya-ru, “to spread, to be in vogue”), corresponding to on'yomi 流行 (ryūkō). A sample jukujikun deverbal (noun derived from a verb form) is 強請 (yusuri, “extortion”), from 強請る (yusu-ru, “to extort”), spelling from 強請 (kyōsei, “extortion”). Note that there are also compound verbs and, less commonly, compound adjectives, and while these may have multiple kanji without intervening characters, they are read using the usual kun'yomi. Examples include 面白い (omo-shiro-i, “interesting”, literally “face + white”) and 狡賢い (zuru-gashiko-i, “sly”, lit. “cunning, crafty + clever, smart”).

Typographically, the furigana for jukujikun are often written so they are centered across the entire word, or for inflectional words over the entire root—corresponding to the reading being related to the entire word—rather than each part of the word being centered over its corresponding character, as is often done for the usual phono-semantic readings.

Broadly speaking, jukujikun can be considered a form of ateji, though in narrow usage, "ateji" refers specifically to using characters for sound and not meaning (sound-spelling), whereas "jukujikun" refers to using characters for their meaning and not sound (meaning-spelling). Many jukujikun (established meaning-spellings) began as gikun (improvised meaning-spellings). Occasionally, a single word will have many such kanji spellings. An extreme example is hototogisu (lesser cuckoo), which may be spelt in many ways, including 杜鵑, 時鳥, 子規, 不如帰, 霍公鳥, 蜀魂, 沓手鳥, 杜宇,田鵑, 沓直鳥, and 郭公—many of these variant spellings are particular to haiku poems.

Single character gairaigo

In some rare cases, an individual kanji has a reading that is borrowed from a modern foreign language (gairaigo), though most often these words are written in katakana. Notable examples include pēji (頁、ページ, page), botan (釦／鈕、ボタン, button), zero (零、ゼロ, zero), and mētoru (米、メートル, meter). These are classed as kun'yomi of a single character, because the character is being used for meaning only (without the Chinese pronunciation), rather than as ateji, which is the classification used when a gairaigo term is written as a compound (2 or more characters). However, unlike the vast majority of other kun'yomi, these readings are not native Japanese, but rather borrowed, so the "kun'yomi" label can be misleading. The readings are also written in katakana, unlike the usual hiragana for native kun'yomi. Note that most of these characters are for units, particularly SI units, in many cases using new characters (kokuji) coined during the Meiji period, such as kiromētoru (粁、キロメートル, kilometer, 米 "meter" + 千 "thousand").

Nanori

Some kanji also have lesser-known readings called nanori (名乗り), which are mostly used for names (often given names) and, in general, are closely related to the kun'yomi. Place names sometimes also use nanori or, occasionally, unique readings not found elsewhere.

When to use which reading

Although there are general rules for when to use on'yomi and when to use kun'yomi, the language is littered with exceptions, and it is not always possible for even a native speaker to know how to read a character without prior knowledge (this is especially true for names, both of people and places); further, a given character may have multiple kun'yomi or on'yomi. When reading Japanese, one primarily recognizes words (multiple characters and okurigana) and their readings rather than individual characters and only guesses the readings of characters when trying to "sound out" an unrecognized word.

Homographs exist, which can sometimes be deduced from context, and sometimes cannot, requiring a glossary. For example, 今日 may be read either as kyō "today (informal)" (special fused reading for native word) or as konnichi "these days (formal)" (on'yomi); in formal writing, this will generally be read as konnichi. Multiple readings are common, such as in 豚汁 "pork soup", which is commonly pronounced both as ton-jiru (mixed on-kun) and buta-jiru (kun-kun), with ton being somewhat more common nationally. Inconsistencies abound—for example, 牛肉 gyū-niku "beef" and 羊肉 yō-niku "mutton" have on-on readings, but 豚肉 buta-niku "pork" and 鶏肉 tori-niku "poultry" have kun-on readings.

The main guideline is that a single kanji followed by okurigana (hiragana characters that are part of the word)—as used in native verbs and adjectives—always indicates kun'yomi, while kanji compounds (kango) usually use on'yomi, which is usually kan-on; however, other on'yomi are also common, and kun'yomi are also commonly used in kango. For a kanji in isolation without okurigana, it is typically read using their kun'yomi, though there are numerous exceptions. For example, 鉄 "iron" is usually read with the on'yomi tetsu rather than the kun'yomi kurogane. Chinese on'yomi which are not the common kan-on reading are a frequent cause of difficulty or mistakes when encountering unfamiliar words or for inexperienced readers, though skilled natives will recognize the word; a good example is ge-doku (解毒, detoxification, anti-poison) (go-on), where (解) is usually instead read as kai.

Okurigana (送り仮名) are used with kun'yomi to mark the inflected ending of a native verb or adjective, or by convention. Japanese verbs and adjectives are closed class, and do not generally admit new words (borrowed Chinese vocabulary, which are nouns, can form verbs by adding -suru (〜する, to do) at the end, and adjectives via 〜の -no or 〜な -na, but cannot become native Japanese vocabulary, which inflect). For example: 赤い aka-i "red", 新しい atara-shii "new", 見る mi-ru "(to) see". Okurigana can be used to indicate which kun'yomi to use, as in 食べる ta-beru versus 食う ku-u (casual), both meaning "(to) eat", but this is not always sufficient, as in 開く, which may be read as a-ku or hira-ku, both meaning "(to) open". 生 is a particularly complicated example, with multiple kun and on'yomi. Okurigana is also used for some nouns and adverbs, as in 情け nasake "sympathy", 必ず kanarazu "invariably", but not for 金 kane "money", for instance. Okurigana is an important aspect of kanji usage in Japanese; see that article for more information on kun'yomi orthography

Kanji occurring in compounds (multi-kanji words) (熟語, jukugo) are generally read using on'yomi, especially for four-character compounds (yojijukugo). Though again, exceptions abound, for example, 情報 jōhō "information", 学校 gakkō "school", and 新幹線 shinkansen "bullet train" all follow this pattern. This isolated kanji versus compound distinction gives words for similar concepts completely different pronunciations. 北 "north" and 東 "east" use the kun'yomi kita and higashi, being stand-alone characters, but 北東 "northeast", as a compound, uses the on'yomi hokutō. This is further complicated by the fact that many kanji have more than one on'yomi: 生 is read as sei in 先生 sensei "teacher" but as shō in 一生 isshō "one's whole life". Meaning can also be an important indicator of reading; 易 is read i when it means "simple", but as eki when it means "divination", both being on'yomi for this character.

These rules of thumb have many exceptions. Kun'yomi compound words are not as numerous as those with on'yomi, but neither are they rare. Examples include 手紙 tegami "letter", 日傘 higasa "parasol", and the famous 神風 kamikaze "divine wind". Such compounds may also have okurigana, such as 空揚げ (also written 唐揚げ) karaage "Chinese-style fried chicken" and 折り紙 origami, although many of these can also be written with the okurigana omitted (for example, 空揚 or 折紙). In general, compounds coined in Japan using Japanese roots will be read in kun'yomi while those imported from China will be read in on'yomi.

Similarly, some on'yomi characters can also be used as words in isolation: 愛 ai "love", 禅 Zen, 点 ten "mark, dot". Most of these cases involve kanji that have no kun'yomi, so there can be no confusion, although exceptions do occur. Alone 金 may be read as kin "gold" or as kane "money, metal"; only context can determine the writer's intended reading and meaning.

Multiple readings have given rise to a number of homographs, in some cases having different meanings depending on how they are read. One example is 上手, which can be read in three different ways: jōzu (skilled), uwate (upper part), or kamite (stage left/house right). In addition, 上手い has the reading umai (skilled). More subtly, 明日 has three different readings, all meaning "tomorrow": ashita (casual), asu (polite), and myōnichi (formal). Furigana (reading glosses) is often used to clarify any potential ambiguities.

Conversely, in some cases homophonous terms may be distinguished in writing by different characters, but not so distinguished in speech, and hence potentially confusing. In some cases when it is important to distinguish these in speech, the reading of a relevant character may be changed. For example, 私立 (privately established, esp. school) and 市立 (city established) are both normally pronounced shi-ritsu; in speech these may be distinguished by the alternative pronunciations watakushi-ritsu and ichi-ritsu. More informally, in legal jargon 前文 "preamble" and 全文 "full text" are both pronounced zen-bun, so 前文 may be pronounced mae-bun for clarity, as in "Have you memorized the preamble of the constitution?". As in these examples, this is primarily using a kun'yomi for one character in a normally on'yomi term.

As stated above, jūbako and yutō readings are also not uncommon. Indeed, all four combinations of reading are possible: on-on, kun-kun, kun-on and on-kun.

Legalese

Certain words take different readings depending on whether the context concerns legal matters or not. For example:

Ambiguous readings

In some instances where even context cannot easily provide clarity for homophones, alternative readings or mixed readings can be used instead of regular readings to avoid ambiguity. For example:

There are also cases where the words are technically heterophones, but they have similar meanings and pronunciations, therefore liable to mishearing and misunderstanding.

Place names

Several famous place names, including those of Japan itself (日本 Nihon or sometimes Nippon), those of some cities such as Tokyo (東京 Tōkyō) and Kyoto (京都 Kyōto), and those of the main islands Honshu (本州 Honshū), Kyushu (九州 Kyūshū), Shikoku (四国 Shikoku), and Hokkaido (北海道 Hokkaidō) are read with on'yomi; however, the majority of Japanese place names are read with kun'yomi: 大阪 Ōsaka, 青森 Aomori, 箱根 Hakone. Names often use characters and readings that are not in common use outside of names. When characters are used as abbreviations of place names, their reading may not match that in the original. The Osaka (大阪) and Kobe (神戸) baseball team, the Hanshin (阪神) Tigers, take their name from the on'yomi of the second kanji of Ōsaka and the first of Kōbe. The name of the Keisei (京成) railway line—linking Tokyo (東京) and Narita (成田)—is formed similarly, although the reading of 京 from 東京 is kei, despite kyō already being an on'yomi in the word Tōkyō.

Japanese family names are also usually read with kun'yomi: 山田 Yamada, 田中 Tanaka, 鈴木 Suzuki. Japanese given names often have very irregular readings. Although they are not typically considered jūbako or yutō, they often contain mixtures of kun'yomi, on'yomi and nanori, such as 大助 Daisuke , 夏美 Natsumi . Being chosen at the discretion of the parents, the readings of given names do not follow any set rules, and it is impossible to know with certainty how to read a person's name without independent verification. Parents can be quite creative, and rumours abound of children called 地球 Āsu ("Earth") and 天使 Enjeru ("Angel"); neither are common names, and have normal readings chikyū and tenshi respectively. Some common Japanese names can be written in multiple ways, e.g., Akira can be written as 亮, 彰, 明, 顕, 章, 聴, 光, 晶, 晄, 彬, 昶, 了, 秋良, 明楽, 日日日, 亜紀良, 安喜良 and many other characters and kanji combinations not listed, Satoshi can be written as 聡, 哲, 哲史, 悟, 佐登史, 暁, 訓, 哲士, 哲司, 敏, 諭, 智, 佐登司, 總, 里史, 三十四, 了, 智詞, etc., and Haruka can be written as 遥, 春香, 晴香, 遥香, 春果, 晴夏, 春賀, 春佳, and several other possibilities. Common patterns do exist, however, allowing experienced readers to make a good guess for most names. To alleviate any confusion on how to pronounce the names of other Japanese people, most official Japanese documents require Japanese to write their names in both kana and kanji.

Chinese place names and Chinese personal names appearing in Japanese texts, if spelled in kanji, are almost invariably read with on'yomi. Especially for older and well-known names, the resulting Japanese pronunciation may differ widely from that used by modern Chinese speakers. For example, Mao Zedong's name is pronounced as Mō Takutō (毛沢東) in Japanese, and the name of the legendary Monkey King, Sun Wukong, is pronounced Son Gokū (孫悟空) in Japanese.

Today, Chinese names that are not well known in Japan are often spelled in katakana instead, in a form much more closely approximating the native Chinese pronunciation. Alternatively, they may be written in kanji with katakana furigana. Many such cities have names that come from non-Chinese languages like Mongolian or Manchu. Examples of such not-well-known Chinese names include:

Internationally renowned Chinese-named cities tend to imitate the older English pronunciations of their names, regardless of the kanji's on'yomi or the Mandarin or Cantonese pronunciation, and can be written in either katakana or kanji. Examples include:

Notes:

• Guangzhou, the city, is pronounced Kōshū, while Guangdong, its province, is pronounced Kanton, not *Kōtō (in this case, opting for a tō-on reading rather than the usual kan-on reading).
• Kaohsiung was originally pronounced Takao (or similar) in Hokkien and Japanese. It received this written name (kanji/Chinese) from Japanese, and later its spoken Mandarin name from the corresponding characters. The English name "Kaohsiung" derived from its Mandarin pronunciation. Today it is pronounced either カオシュン or タカオ in Japanese.
• Taipei is generally pronounced たいほく in Japanese.

In some cases the same kanji can appear in a given word with different readings. Normally this occurs when a character is duplicated and the reading of the second character has voicing (rendaku), as in 人人 hito-bito "people" (more often written with the iteration mark as 人々), but in rare cases the readings can be unrelated, as in tobi-haneru (跳び跳ねる, "hop around", more often written 飛び跳ねる).

Pronunciation assistance

Because of the ambiguities involved, kanji sometimes have their pronunciation for the given context spelled out in ruby characters known as furigana, (small kana written above or to the right of the character, e.g. 振仮名（ふりがな）) or kumimoji (small kana written in-line after the character). This is especially true in texts for children or foreign learners. It is also used in newspapers and manga for rare or unusual readings, or for situations like the first time a character's name is given, and for characters not included in the officially recognized set of essential kanji. Works of fiction sometimes use furigana to create new "words" by giving normal kanji non-standard readings, or to attach a foreign word rendered in katakana as the reading for a kanji or kanji compound of the same or similar meaning.

Spelling words

Conversely, specifying a given kanji, or spelling out a kanji word—whether the pronunciation is known or not—can be complicated, due to the fact that there is not a commonly used standard way to refer to individual kanji (one does not refer to "kanji #237"), and that a given reading does not map to a single kanji—indeed there are many homophonous words, not simply individual characters, particularly for kango (with on'yomi). It is easiest to write the word out—either on paper or tracing it in the air—or look it up (given the pronunciation) in a dictionary, particularly an electronic dictionary; when this is not possible, such as when speaking over the phone or writing implements are not available (and tracing in air is too complicated), various techniques can be used. These include giving kun'yomi for characters—these are often unique—using a well-known word with the same character (and preferably the same pronunciation and meaning), and describing the character via its components. For example, one may explain how to spell the word kōshinryō (香辛料, spice) via the words kao-ri (香り, fragrance), kara-i (辛い, spicy), and in-ryō (飲料, beverage)—the first two use the kun'yomi, the third is a well-known compound—saying "kaori, karai, ryō as in inryō."

Dictionaries

In dictionaries, both words and individual characters have readings glossed, via various conventions. Native words and Sino-Japanese vocabulary are glossed in hiragana (for both kun and on readings), while borrowings (gairaigo)—including modern borrowings from Chinese—are glossed in katakana; this is the standard writing convention also used in furigana. By contrast, readings for individual characters are conventionally written in katakana for on readings, and hiragana for kun readings. Kun readings may further have a separator to indicate which characters are okurigana, and which are considered readings of the character itself. For example, in the entry for 食, the reading corresponding to the basic verb eat (食べる, taberu) may be written as た.べる (ta.beru), to indicate that ta is the reading of the character itself. Further, kanji dictionaries often list compounds including irregular readings of a kanji.

Local developments and divergences from Chinese

Since kanji are essentially Chinese hanzi used to write Japanese, the majority of characters used in modern Japanese still retain their Chinese meaning, physical resemblance with some of their modern traditional Chinese characters counterparts, and a degree of similarity with Classical Chinese pronunciation imported to Japan from the 5th to 9th centuries. Nevertheless, after centuries of development, there is a notable number of kanji used in modern Japanese which have different meaning from hanzi used in modern Chinese. Such differences are the result of:

• the use of characters created in Japan,
• characters that have been given different meanings in Japanese, and
• post-World War II simplifications (shinjitai) of the character.

Likewise, the process of character simplification in mainland China since the 1950s has resulted in the fact that Japanese speakers who have not studied Chinese may not recognize some simplified characters.

Kokuji

In Japanese, Kokuji (国字, "national characters") refers to Chinese characters made outside of China. Specifically, kanji made in Japan are referred to as Wasei kanji (和製漢字). They are primarily formed in the usual way of Chinese characters, namely by combining existing components, though using a combination that is not used in China. The corresponding phenomenon in Korea is called gukja (Korean: 국자; Hanja: 國字), a cognate name; there are however far fewer Korean-coined characters than Japanese-coined ones. Other languages using the Chinese family of scripts sometimes have far more extensive systems of native characters, most significantly Vietnamese chữ Nôm, which comprises over 20,000 characters used throughout traditional Vietnamese writing, and Zhuang sawndip, which comprises over 10,000 characters, which are still in use.

Kokkun

In addition to kokuji, there are kanji that have been given meanings in Japanese that are different from their original Chinese meanings. These are not considered kokuji but are instead called kok‌kun (国訓) and include characters such as the following:

Types of kanji by category

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Han-dynasty scholar Xu Shen, in his 2nd-century dictionary Shuowen Jiezi, classified Chinese characters into six categories (Chinese: 六書 liùshū, Japanese: 六書 rikusho). The traditional classification is still taught but is problematic and is no longer the focus of modern lexicographic practice, as some categories are not clearly defined, nor are they mutually exclusive: the first four refer to structural composition, while the last two refer to usage.

Shōkei moji (象形文字)

Shōkei (Mandarin: xiàngxíng) characters are pictographic sketches of the object they represent. For example, 目 is an eye, while 木 is a tree. The current forms of the characters are very different from the originals, though their representations are more clear in oracle bone script and seal script. These pictographic characters make up only a small fraction of modern characters.

Shiji moji (指事文字)

Shiji (Mandarin: zhǐshì) characters are ideographs, often called "simple ideographs" or "simple indicatives" to distinguish them and tell the difference from compound ideographs (below). They are usually simple graphically and represent an abstract concept such as 上 "up" or "above" and 下 "down" or "below". These make up a tiny fraction of modern characters.

Kaii moji (会意文字)

Kaii (Mandarin: huìyì) characters are compound ideographs, often called "compound indicatives", "associative compounds", or just "ideographs". These are usually a combination of pictographs that combine semantically to present an overall meaning. An example of this type is 休 (rest) from 亻 (person radical) and 木 (tree). Another is the kokuji 峠 (mountain pass) made from 山 (mountain), 上 (up) and 下 (down). These make up a tiny fraction of modern characters.

Keisei moji (形声文字)

Keisei (Mandarin: xíngshēng) characters are phono-semantic or radical-phonetic compounds, sometimes called "semantic-phonetic", "semasio-phonetic", or "phonetic-ideographic" characters, are by far the largest category, making up about 90% of the characters in the standard lists; however, some of the most frequently used kanji belong to one of the three groups mentioned above, so keisei moji will usually make up less than 90% of the characters in a text. Typically they are made up of two components, one of which (most commonly, but by no means always, the left or top element) suggests the general category of the meaning or semantic context, and the other (most commonly the right or bottom element) approximates the pronunciation. The pronunciation relates to the original Chinese, and may now only be distantly detectable in the modern Japanese on'yomi of the kanji; it generally has no relation at all to kun'yomi. The same is true of the semantic context, which may have changed over the centuries or in the transition from Chinese to Japanese. As a result, it is a common error in folk etymology to fail to recognize a phono-semantic compound, typically instead inventing a compound-indicative explanation.

Tenchū moji (転注文字)

Tenchū (Mandarin: zhuǎnzhù) characters have variously been called "derivative characters", "derivative cognates", or translated as "mutually explanatory" or "mutually synonymous" characters; this is the most problematic of the six categories, as it is vaguely defined. It may refer to kanji where the meaning or application has become extended. For example, 楽 is used for 'music' and 'comfort, ease', with different pronunciations in Chinese reflected in the two different on'yomi, gaku "music" and raku "pleasure".

Kasha moji (仮借文字)

Kasha (Mandarin: jiǎjiè) are rebuses, sometimes called "phonetic loans". The etymology of the characters follows one of the patterns above, but the present-day meaning is completely unrelated to this. A character was appropriated to represent a similar-sounding word. For example, 来 in ancient Chinese was originally a pictograph for "wheat". Its syllable was homophonous with the verb meaning "to come", and the character is used for that verb as a result, without any embellishing "meaning" element attached. The character for wheat 麦, originally meant "to come", being a keisei moji having 'foot' at the bottom for its meaning part and "wheat" at the top for sound. The two characters swapped meaning, so today the more common word has the simpler character. This borrowing of sounds has a very long history.

Related symbols

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The iteration mark (々) is used to indicate that the preceding kanji is to be repeated, functioning similarly to a ditto mark in English. It is pronounced as though the kanji were written twice in a row, for example iroiro (色々, "various") and tokidoki (時々, "sometimes"). This mark also appears in personal and place names, as in the surname Sasaki (佐々木). This symbol is a simplified version of the kanji 仝, a variant of dō (同, "same").

Another abbreviated symbol is ヶ, in appearance a small katakana ke, but actually a simplified version of the kanji 箇, a general counter. It is pronounced ka when used to indicate quantity (such as 六ヶ月, rokkagetsu "six months") or ga if used as a genitive (as in 関ヶ原 sekigahara "Sekigahara").

The way how these symbols may be produced on a computer depends on the operating system. In macOS, typing じおくり will reveal the symbol 々 as well as ヽ, ゝ and ゞ. To produce 〻, type おどりじ. Under Windows, typing くりかえし will reveal some of these symbols, while in Google IME, おどりじ may be used.

Collation

Kanji, whose thousands of symbols defy ordering by conventions such as those used for the Latin script, are often collated using the traditional Chinese radical-and-stroke sorting method. In this system, common components of characters are identified; these are called radicals. Characters are grouped by their primary radical, then ordered by number of pen strokes within radicals. For example, the kanji character 桜, meaning "cherry", is sorted as a ten-stroke character under the four-stroke primary radical 木 meaning "tree". When there is no obvious radical or more than one radical, convention governs which is used for collation.

Other kanji sorting methods, such as the SKIP system, have been devised by various authors.

Modern general-purpose Japanese dictionaries (as opposed to specifically character dictionaries) generally collate all entries, including words written using kanji, according to their kana representations (reflecting the way they are pronounced). The gojūon ordering of kana is normally used for this purpose.

Kanji education

Japanese schoolchildren are expected to learn 1,026 basic kanji, the kyōiku kanji, before finishing the sixth grade. The order in which these characters are learned is fixed. The kyōiku kanji list is a subset of a larger list, originally of 1,945 kanji and extended to 2,136 in 2010, known as the jōyō kanji required for the level of fluency necessary to read newspapers and literature in Japanese. This larger list of characters is to be mastered by the end of the ninth grade. Schoolchildren learn the characters by repetition and radical.

Students studying Japanese as a foreign language are often required by a curriculum to acquire kanji without having first learned the vocabulary associated with them. Strategies for these learners vary from copying-based methods to mnemonic-based methods such as those used in James Heisig's series Remembering the Kanji. Other textbooks use methods based on the etymology of the characters, such as Mathias and Habein's The Complete Guide to Everyday Kanji and Henshall's A Guide to Remembering Japanese Characters. Pictorial mnemonics, as in the text Kanji Pict-o-graphix by Michael Rowley, are also seen.

The Japan Kanji Aptitude Testing Foundation provides the Kanji kentei (日本漢字能力検定試験 Nihon kanji nōryoku kentei shiken; "Test of Japanese Kanji Aptitude"), which tests the ability to read and write kanji. The highest level of the Kanji kentei tests about six thousand kanji.

See also

• Chinese influence on Japanese culture
• Braille kanji
• Hanja (Korean equivalent)
• Chữ Hán (Vietnamese equivalent)
• Han unification
• Chinese family of scripts
• Japanese script reform
• Japanese typefaces (shotai)
• Japanese writing system
• Kanji of the year
• List of kanji by stroke count
• Radical (Chinese character)
• Stroke order
• Table of kanji radicals
• Rōmaji – method of writing Japanese with the Latin alphabet
• Cangjie – legendary inventor of Chinese characters

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Sources

• DeFrancis, John (1990). The Chinese Language: Fact and Fantasy. Honolulu: University of Hawaii Press. ISBN 0-8248-1068-6.
• Hadamitzky, W.; Spahn, M. (1981). Kanji and Kana. Boston: Tuttle.
• Hannas, William. C. (1997). Asia's Orthographic Dilemma. Honolulu: University of Hawaii Press. ISBN 0-8248-1892-X.
• Kaiser, Stephen (1991). "Introduction to the Japanese Writing System". Kodansha's Compact Kanji Guide. Tokyo: Kondansha International. ISBN 4-7700-1553-4.
• Miyake, Marc Hideo (2003). Old Japanese: A Phonetic Reconstruction. New York, NY; London, England: RoutledgeCurzon. ISBN 0-415-30575-6.
• Morohashi, Tetsuji. 大漢和辞典 Dai Kan-Wa Jiten (Comprehensive Chinese–Japanese Dictionary) 1984–1986. Tokyo: Taishukan.
• Mitamura, Joyce Yumi; Mitamura, Yasuko Kosaka (1997). Let's Learn Kanji. Tokyo: Kondansha International. ISBN 4-7700-2068-6.
• Unger, J. Marshall (1996). Literacy and Script Reform in Occupation Japan: Reading Between the Lines. Oxford University Press. ISBN 0-19-510166-9.

External links

• Jim Breen's WWWJDIC server used to find Kanji from English or romanized Japanese
• Change in Script Usage in Japanese: A Longitudinal Study of Japanese Government White Papers on Labor, discussion paper by Takako Tomoda in the Electronic Journal of Contemporary Japanese Studies, August 19, 2005.
• Jisho—Online Japanese dictionary

Glyph conversion

• A simple Shinjitai—Kyūjitai converter
• A practical Shinjitai—Kyūjitai—Simplified Chinese character converter
• A complex Shinjitai—Kyūjitai converter
• A downloadable Shinjitai—Kyūjitai—Simplified Chinese character converter Archived February 10, 2009, at the Wayback Machine