The of the
Japanese language
is the principal language of the Japonic languages, Japonic language family spoken by the Japanese people. It has around 123 million speakers, primarily in Japan, the only country where it is the national language, and within the Japanese dia ...
fall into two primary clades, Eastern (including modern capital
Tokyo
Tokyo, officially the Tokyo Metropolis, is the capital of Japan, capital and List of cities in Japan, most populous city in Japan. With a population of over 14 million in the city proper in 2023, it is List of largest cities, one of the most ...
) and Western (including old capital
Kyoto
Kyoto ( or ; Japanese language, Japanese: , ''Kyōto'' ), officially , is the capital city of Kyoto Prefecture in the Kansai region of Japan's largest and most populous island of Honshu. , the city had a population of 1.46 million, making it t ...
), with the dialects of
Kyushu
is the third-largest island of Japan's Japanese archipelago, four main islands and the most southerly of the four largest islands (i.e. excluding Okinawa Island, Okinawa and the other Ryukyu Islands, Ryukyu (''Nansei'') Ryukyu Islands, Islands ...
and
Hachijō Island often distinguished as additional branches, the latter perhaps the most divergent of all. The
Ryukyuan languages
The , also Lewchewan or Luchuan (), are the indigenous languages of the Ryukyu Islands, the southernmost part of the Japanese archipelago. Along with the Japanese language and the Hachijō language, they make up the Japonic language family.
Ju ...
of
Okinawa Prefecture
is the southernmost and westernmost prefecture of Japan. It consists of three main island groups—the Okinawa Islands, the Sakishima Islands, and the Daitō Islands—spread across a maritime zone approximately 1,000 kilometers east to west an ...
and the southern islands of
Kagoshima Prefecture
is a Prefectures of Japan, prefecture of Japan located on the island of Kyushu and the Ryukyu Islands. Kagoshima Prefecture has a population of 1,527,019 (1 February 2025) and has a geographic area of 9,187 Square kilometre, km2 (3,547 Square m ...
form a separate branch of the
Japonic family, and are not Japanese dialects, although they are sometimes referred to as such.
The setting of Japan with its numerous islands and mountains has the ideal setting for developing many dialects.
[ ]
History
Regional variants of Japanese have been confirmed since the
Old Japanese
is the oldest attested stage of the Japanese language, recorded in documents from the Nara period (8th century). It became Early Middle Japanese in the succeeding Heian period, but the precise delimitation of the stages is controversial.
Old Ja ...
era. The ''
Man'yōshū
The is the oldest extant collection of Japanese (poetry in Classical Japanese), compiled sometime after AD 759 during the Nara period. The anthology is one of the most revered of Japan's poetic compilations. The compiler, or the last in ...
'', the oldest existing collection of Japanese poetry, includes poems written in dialects of the capital (
Nara
The National Archives and Records Administration (NARA) is an independent agency of the United States government within the executive branch, charged with the preservation and documentation of government and historical records. It is also task ...
) and eastern Japan, but other dialects were not recorded. The compiler included ''azuma uta'' ("eastern songs") that show that eastern dialect traits were distinct from the western dialect of Nara.
It is not clear if the capital of Nara entertained the idea of a standard dialect, however, they had an understanding which dialect should be regarded as the standard one, the dialect of the capital.
The recorded features of
eastern dialects were rarely inherited by modern dialects, except for a few
language islands such as
Hachijo Island. In the
Early Middle Japanese era, there were only vague records such as "rural dialects are crude". However, since the
Late Middle Japanese era, features of regional dialects had been recorded in some books, for example ''
Arte da Lingoa de Iapam'', and the recorded features were fairly similar to modern dialects. In these works, recorded by the Christian missionaries in Japan, they regard the true colloquial Japanese as the one used by the court nobles in Kyōto. Other indications for the Kyōto dialect to be considered the standard dialect at that time are glossaries of local dialects that list the Kyōto equivalent for local expressions.
The variety of Japanese dialects developed markedly during the
Early Modern Japanese era (
Edo period
The , also known as the , is the period between 1600 or 1603 and 1868 in the history of Japan, when the country was under the rule of the Tokugawa shogunate and some 300 regional ''daimyo'', or feudal lords. Emerging from the chaos of the Sengok ...
) because many feudal lords restricted the movement of people to and from other fiefs. Some isoglosses agree with old borders of ''
han'', especially in Tohoku and Kyushu. Nevertheless, even with the political capital being moved to Edo (i.e. Tōkyō) the status of the Kyōto dialect was not threatened immediately as it was still the cultural and economic center that dominated Japan. This dominance waned as Edo began to assert more political and economic force and made investments in its cultural development. At the end of the eighteenth century the Japanese that was spoken in Edo was regarded as standard as all glossaries from this period use the Edo dialect for local expressions.
[ ]
In the
Meiji period
The was an era of Japanese history that extended from October 23, 1868, to July 30, 1912. The Meiji era was the first half of the Empire of Japan, when the Japanese people moved from being an isolated feudal society at risk of colonizatio ...
the Tōkyō dialect was assuming the role of a standard dialect that was used between different regions to communicate with each other. The Meiji government set policies in place to spread the concept of . One of the main goals was to be an equal to the western world and the unification of the language was a part to achieve this. For the ''hyōjun-go'' the speech of the Tōkyō middle class served as a model. The Ministry of Education at this time made text books in the new standard language and fostered an inferiority complex in the minds of those who spoke in dialects besides the Tōkyō dialect. One example is a student who was forced to wear a "
dialect tag" around the neck.
From the 1940s to the 1960s, the period of
Shōwa nationalism and the
post-war economic miracle, the push for the replacement of regional
varieties with Standard Japanese reached its peak.
After World War II, the concept of was introduced, which differed from the concept of the standard language insofar that it is heavily influenced by the standard language but it retains dialectal traits. Across Japan, the 'common language' productively used in everyday speech can differ from region to region but it is still mutually intelligible.
Now Standard Japanese has spread throughout the nation, and traditional regional varieties are declining because of education, television, expansion of traffic, urban concentration, etc, in a process known as
dialect levelling. However, regional varieties have not been completely replaced with Standard Japanese. The spread of Standard Japanese means the regional varieties are now valued as "nostalgic", "heart-warming" and markers of "precious local identity", and many speakers of regional dialects have gradually overcome their sense of inferiority regarding their natural way of speaking. The contact between regional varieties and Standard Japanese creates new regional speech forms among young people, such as
Okinawan Japanese
is the Japanese language as spoken by the people of Okinawa Islands. The name ''Uchinaa'' ''Yamatu-guchi'' is composed of ''Uchinaa'' meaning "Okinawa", ''Yamatu'' referring to mainland Japan, and the suffix -''guchi'' approximately meaning " ...
.
Mutual intelligibility
In terms of
mutual intelligibility
In linguistics, mutual intelligibility is a relationship between different but related language varieties in which speakers of the different varieties can readily understand each other without prior familiarity or special effort. Mutual intelli ...
, a survey in 1967 found the four most unintelligible dialects (excluding
Ryūkyūan languages and
Tohoku dialects) to students from Greater Tokyo are the
Kiso dialect (in the deep mountains of
Nagano Prefecture
is a Landlocked country, landlocked Prefectures of Japan, prefecture of Japan located in the Chūbu region of Honshu. Nagano Prefecture has a population of 2,007,682 () and has a geographic area of . Nagano Prefecture borders Niigata Prefecture ...
), the
Himi dialect (in
Toyama Prefecture), the
Kagoshima dialect
The , often referred to as the , is a group of dialects or dialect continuum of the Japanese language spoken mainly within the area of the former Ōsumi and Satsuma provinces now incorporated into the southwestern prefecture of Kagoshima. It ...
and the
Maniwa dialect (in the mountains of
Okayama Prefecture
is a Prefectures of Japan, prefecture of Japan located in the Chūgoku region of Honshu. Okayama Prefecture has a population of 1,826,059 (1 February 2025) and has a geographic area of 7,114 Square kilometre, km2 (2,746 sq mi). Okayama Prefecture ...
).
The survey is based on recordings of 12- to 20- second long, of 135 to 244
phoneme
A phoneme () is any set of similar Phone (phonetics), speech sounds that are perceptually regarded by the speakers of a language as a single basic sound—a smallest possible Phonetics, phonetic unit—that helps distinguish one word fr ...
s, which 42 students listened and translated word-by-word. The listeners were all
Keio University students who grew up in the
Kanto region.
Classification
There are several generally similar approaches to classifying Japanese dialects. Misao Tōjō classified mainland Japanese dialects into three groups: Eastern, Western and Kyūshū dialects. Mitsuo Okumura classified Kyushu dialects as a subclass of Western Japanese. These theories are mainly based on grammatical differences between east and west, but
Haruhiko Kindaichi classified mainland Japanese into concentric circular three groups: inside (Kansai, Shikoku, etc.), middle (Western Kantō, Chūbu, Chūgoku, etc.) and outside (Eastern Kantō, Tōhoku, Izumo, Kyushu, Hachijō, etc.) based on systems of accent, phoneme and conjugation.
Eastern and Western Japanese
A primary distinction exists between Eastern and Western Japanese. This is a long-standing divide that occurs in both language and culture. Tokugawa points out the distinct eating habits, shapes of tools and utensils. One example is the kind of fish eaten in both areas. While the Eastern region eats more salmon, the West consumes more seabream.
The map in the box at the top of this page divides the two along phonological lines. West of the dividing line, the more complex Kansai-type
pitch accent
A pitch-accent language is a type of language that, when spoken, has certain syllables in words or morphemes that are prominent, as indicated by a distinct contrasting pitch (music), pitch (tone (linguistics), linguistic tone) rather than by vol ...
is found; east of the line, the simpler Tokyo-type accent is found, though Tokyo-type accents also occur further west, on the other side of Kansai. However, this
isogloss
An isogloss, also called a heterogloss, is the geographic boundary of a certain linguistics, linguistic feature, such as the pronunciation of a vowel, the meaning of a word, or the use of some morphological or syntactic feature. Isoglosses are a ...
largely corresponds to several grammatical distinctions as well: West of the pitch-accent isogloss:
* The perfective form of ''-u'' verbs such as ''harau'' 'to pay' is ''harōta'' (or minority ''harota'' or ''haruta''), showing
u-onbin, rather than Eastern (and Standard) ''haratta''
** The perfective form of ''-su'' verbs such as ''otosu'' 'to drop' is also ''otoita'' in Western Japanese (largely apart from Kansai dialect) vs. ''otoshita'' in Eastern
* The imperative of ''-ru (
ichidan)'' verbs such as ''miru'' 'to look' is ''miyo'' or ''mii'' rather than Eastern ''miro'' (or minority ''mire'', though Kyushu dialect also uses ''miro'' or ''mire'')
* The adverbial form of ''-i'' adjectival verbs such as ''hiroi'' 'wide' is ''hirō'' (or minority ''hirū''), showing
u-onbin, for example ''hirōnaru'' (to become wide), rather than Eastern ''hiroku'', for example ''hirokunaru'' (to become wide)
* The negative form of verbs is ''-nu'' or ''-n'' rather than ''-nai'' or ''-nee'', and uses a different verb stem; thus ''suru'' 'to do' is ''senu'' or ''sen'' rather than ''shinai'' or ''shinee'' (apart from
Sado Island, which uses ''shinai'')

* The
copula is ''da'' in Eastern and ''ja'' or ''ya'' in Western Japanese, though Sado as well as some dialects further west such as
San'in use ''da''
ee map at right* The verb ''iru'' 'to exist' in Eastern and ''oru'' in Western, though the Wakayama dialect also uses ''aru'' and some Kansai and Fukui subdialects use both
While these grammatical isoglosses are close to the pitch-accent line given in the map, they do not follow it exactly. Apart from Sado Island, which has Eastern ''shinai'' and ''da'', all of the Western features are found west of the pitch-accent line, though a few Eastern features may crop up again further west (''da'' in San'in, ''miro'' in Kyushu). East of the line, however, there is a zone of intermediate dialects which have a mixture of Eastern and Western features. Echigo dialect has ''harōta'', though not ''miyo'', and about half of it has ''hirōnaru'' as well. In Gifu, all Western features are found apart from pitch accent and ''harōta''; Aichi has ''miyo'' and ''sen'', and in the west (
Nagoya dialect) ''hirōnaru'' as well: These features are substantial enough that Toshio Tsuzuku classifies Gifu–Aichi dialect as Western Japanese. Western Shizuoka (Enshū dialect) has ''miyo'' as its single Western Japanese feature.
[
The Western Japanese Kansai dialect was the prestige dialect when Kyoto was the capital, and Western forms are found in literary language as well as in honorific expressions of modern Tokyo dialect (and therefore Standard Japanese), such as adverbial ''ohayō gozaimasu'' (not ''*ohayaku''), the humble existential verb ''oru'', and the polite negative ''-masen'' (not ''*-mashinai''),][ which uses the Kyoto-style negative ending -n. Because the imperial court, which put emphasis on correct polite speech, was located in Kyoto for a long time, there was greater development of honorific speech forms in Kyoto, which were borrowed into Tokyo speech.][Shibatani (2008: 200)] Another feature that the modern Tokyo dialect shares with Kyoto is the preservation of the vowel sequences , , and : in Eastern dialects, these tend to undergo coalescence and be replaced by , and respectively. Examples of words that originated in Kyoto and were adopted by Tokyo are ''yaru'' ("to give"), ''kaminari'' ("thunder") and ''asatte'' ("two days from today").
Kyushu Japanese
Kyushu dialects are classified into three groups, Hichiku dialect, Hōnichi dialect and Satsugu (Kagoshima) dialect, and have several distinctive features:
*as noted above, Eastern-style imperatives ''miro ~ mire'' rather than Western Japanese ''miyo''
*''ka''-adjectives in Hichiku and Satsugu rather than Western and Eastern ''i''-adjectives, as in ''samuka'' for ''samui'' 'cold', ''kuyaka'' for ''minikui'' 'ugly' and ''nukka'' for ''atsui'' 'warm'
*the nominalization
In linguistics, nominalization or nominalisation, also known as nouning, is the use of a word that is not a noun (e.g., a verb, an adjective or an adverb) as a noun, or as the head (linguistics), head of a noun phrase. This change in functional c ...
and question particle ''to'' except for Kitakyushu and Oita, versus Western and Eastern ''no'', as in ''tottō to?'' for ''totte iru no?'' 'is this taken?' and ''iku to tai'' or ''ikuttai'' for ''iku no yo'' 'I'll go'
*the directional particle ''sai'' (Standard ''e'' and ''ni''), though Eastern Tohoku dialect use a similar particle ''sa''
*the emphatic sentence-final particles ''tai'' and ''bai'' in Hichiku and Satsugu (Standard ''yo'')
*a concessive particle ''batten'' for ''dakedo'' 'but, however' in Hichiku and Satsugu, though Eastern Tohoku Aomori dialect has a similar particle ''batte''
* is pronounced and palatalizes ''s, z, t, d,'' as in ''mite'' and ''sode'' , though this is a conservative ( Late Middle Japanese) pronunciation found with ''s, z'' (''sensei'' ) in scattered areas throughout Japan like the Umpaku dialect.
*as some subdialects in Shikoku and Chugoku, but generally not elsewhere, the accusative particle ''o'' resyllabifies a noun: ''honno'' or ''honnu'' for ''hon-o'' 'book', ''kakyū'' for ''kaki-o'' 'persimmon'.
* is often dropped, for ''koi'' 'this' versus Western and Eastern Japanese ''kore''
*vowel reduction
In phonetics, vowel reduction is any of various changes in the acoustic ''quality'' of vowels as a result of changes in stress, sonority, duration, loudness, articulation, or position in the word (e.g. for the Muscogee language), and which ar ...
is frequent especially in Satsugu and Gotō Islands, as in ''in'' for ''inu'' 'dog' and ''kuQ'' for ''kubi'' 'neck'
*Kyushu dialects share some lexical items with Ryukyuan languages, some of which appear to be innovations. Some scholars have proposed that Kyushu dialects and Ryukyuan languages are the same language group within the Japonic family.
Much of Kyushu either lacks pitch accent or has its own, distinctive accent. Kagoshima dialect is so distinctive that some have classified it as a fourth branch of Japanese, alongside Eastern, Western, and the rest of Kyushu.
Hachijō Japanese
A small group of dialects spoken in Hachijō-jima and Aogashima, islands south of Tokyo, as well as the Daitō Islands
The are an archipelago consisting of three isolated coral islands, administered by Japan, in the Philippine Sea southeast of Okinawa Prefecture, Okinawa. The islands have a total area of and a population of 2,107.
Administratively, the whole gr ...
east of Okinawa. Hachijō dialect is quite divergent and sometimes thought to be a primary branch of Japanese. It retains an abundance of inherited ancient Eastern Japanese features.
Cladogram
The relationships between the dialects are approximated in the following cladogram
A cladogram (from Greek language, Greek ''clados'' "branch" and ''gramma'' "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an Phylogenetic tree, evolutionary tree because it does not s ...
:
Theories
Theory of Peripheral Distribution of Dialectal Forms
West geographically separated areas seem to have been influenced by Eastern traits. The phonology of Tokyo has influenced Western areas like San-in, Shikoku and Kyushu. Eastern morpho-syntactic and lexical characteristics are also found in the West. These instances cannot be explained as borrowing from the Kyoto speech as Tokyo did because between the regions Eastern traits are not contiguous and there is no evidence that regions had contact with Tokyo. One theory argues that the Eastern type speech was spread all over Japan at the beginning and later Western characteristics developed. The eastward spread was prevented through the geography of Japan that divides East and West that separated the cultures in each of them socio-culturally until this day.
Kunio Yanagita
was a Japanese author, scholar, and Folklore studies, folklorist. He began his career as a bureaucrat, but developed an interest in rural Japan and its folk traditions. This led to a change in his career. His pursuit of this led to his eventual e ...
began his discussion for this theory in analysing the local variants for the word "snail". He discovered that the newest words for snail are used in the proximity of Kyoto, the old cultural center, and older forms are found in outer areas. Since the spreading of newer forms of words is slow, older forms are observable in the areas farthest away from the center, creating in effect a situation in which older forms are surrounded by newer forms. His theory in the case of Japan argues that the spread of newer forms happens in a circular pattern with its center being the cultural center. However, this theory can only be true if the characteristics located in peripheral areas are reflections of the historical ones.
Origin of Japanese
While it is generally accepted that languages in Western Japan are older than the Tokyo dialect, there are new studies that challenge this assumption. For example, there exists a distinction between five word classes in the Osaka-Kyoto dialect while there is no such distinction made in other parts of Japan in the past. Tokugawa argues that it is unlikely that the Osaka-Kyoto speech would be first established and other systems of speech would not be affected by it. Therefore, he states that the Osaka-Kyoto speech created the distinction afterwards. He concludes that either Western Japan accent or the Eastern variant "could be taken the parent of Central Japan accent."
The Kyoto speech seems to rather have conserved its speech while peripheral dialects have made new innovations over time. However, peripheral dialects have features that are reminiscent of historical forms. The language of peripheral areas form linguistic areas of older forms that come from the central language while its phonetics are distinct from the central language. On the other hand, the central area has influenced other dialects by the propagation of innovative forms.[Shibatani (2008: 214) ]
Dialect articles
See also
* Yotsugana
are a set of four specific kana, じ, ぢ, ず, づ (in the Nihon-shiki romanization system: ''zi'', ''di'', ''zu'', ''du''), used in the Japanese writing system. They historically represented four distinct voiced morae (syllables) in ...
, the different distinctions of historical *zi, *di, *zu, *du in different regions of Japan
* Okinawan Japanese
is the Japanese language as spoken by the people of Okinawa Islands. The name ''Uchinaa'' ''Yamatu-guchi'' is composed of ''Uchinaa'' meaning "Okinawa", ''Yamatu'' referring to mainland Japan, and the suffix -''guchi'' approximately meaning " ...
and Amami Japanese, variants of Standard Japanese influenced by the Ryukyuan languages
The , also Lewchewan or Luchuan (), are the indigenous languages of the Ryukyu Islands, the southernmost part of the Japanese archipelago. Along with the Japanese language and the Hachijō language, they make up the Japonic language family.
Ju ...
References
Bibliography
*
*
*
*
*
* Tokugawa, M. (1972): Towards a family tree for accent in Japanese dialects. In: Papers in Japanese Linguistics 1:2, pp. 301—320.
External links
National Institute for Japanese Language and Linguistics
*
("Dialect research room")
*
日本言語地図
("Linguistic Atlas of Japan")
*
** ttps://mmsrv.ninjal.ac.jp/hogenrokuon_siryo/en/index.html Datasets of "Dialect Recording Series"
*
Zenkoku Hougendanwa Database
*
方言文法全国地図
("Dialect grammar maps across Japan")
*
Endangered languages of Japan
Dialectological Circle of Japan
Center of the study of Dialectology. Tohoku University
Kansai Dialect Self-study Site for Japanese Language Learner
Japanese Dialects
全国方言辞典
("All Japan Dialects Dictionary")
Guide to Japanese Dialects
{{DEFAULTSORT:Japanese Dialects