Understanding Eastern Old Japanese: A Linguistic History
Long before the modern Japanese language took its current form, the islands of Japan were home to a diverse array of linguistic varieties. One of the most significant of these is Eastern Old Japanese (EOJ). Spoken between the 4th and 9th centuries, this group of heterogeneous varieties provides a vital window into the ancient linguistic landscape of the eastern provinces, a region traditionally known as Togoku or Azuma.
As a branch of the Japonic language family, Eastern Old Japanese stands in contrast to the varieties spoken in the west and in Kyūshū. While it shares a common ancestor with other Old Japanese varieties, its unique phonology and vocabulary offer researchers deep insights into the migration and cultural development of early Japan.
ไม่มีภาพประกอบKey Facts
- Era: 4th to 9th century.
- Region: Eastern Japan (modern-day Kantō, Chūbu, and Tōhoku regions).
- Language Family: Japonic (Insular Japonic subgroup).
- Primary Sources: Attested through 8th-century poetry anthologies like the Man'yōshū.
- Linguistic Type: Agglutinative (using suffixes and prefixes to modify meaning) with a subject–object–verb (SOV) word order.
- Modern Relic: The Hachijō language on the Izu Islands.
Geographic Distribution and Dialect Varieties
Eastern Old Japanese was not a single, uniform language but rather a collection of dialects spoken east of the ancient capital, Nara. This area encompassed what we now recognize as the Kantō, Chūbu, and Tōhoku regions. Because many ancient poems do not specify their exact origin, scholars have different theories regarding how these dialects were divided.
Dialect Classifications
Different linguists propose different boundaries for these ancient speech communities:
- Bjarke Frellesvig (2010): Distinguishes three areas: Northern (Kazusa, Mutsu, and Shimotsuke), Central (Hitachi, Kōzuke, Musashi, Sagami, and Shimōsa), and Southern (Shinano, Suruga, and Tōtōmi). He notes that the Northern variety is the most divergent from Nara Old Japanese.
- John Kupchik (2023): Groups these into two main categories: Töpo-Suruga Old Japanese (covering the southern provinces) and Eastern Old Japanese (covering the rest). He notes distinct differences in spelling between these two groups.
Linguistic Structure and Phonology
In terms of typology—the study of how languages are structured—Eastern Old Japanese follows a subject–object–verb (SOV) order. It is primarily an agglutinative language, meaning it builds meaning by adding various suffixes to a root word. Interestingly, unlike many other SOV languages, it also utilizes prefixes.
The phonology (sound system) of Eastern Old Japanese was characterized by a strict (C)V structure, meaning every syllable consisted of an optional consonant followed by a vowel. The language did not feature long vowels or consonant gemination (doubled consonants). One of the most significant features is the vowel system; researchers believe the Eastern vowels were actually closer to the reconstructed Proto-Japonic (the theoretical ancestor of all Japonic languages) than the Western varieties were.
ไม่มีภาพประกอบVocabulary and Attestations
We know about Eastern Old Japanese primarily through written records from the 8th century. Most of our knowledge comes from poems collected in famous anthologies, including the Man'yōshū, the Kokin wakashū, and the Fudoki. According to scholar Alexander Vovin (2014), there are approximately 242 short poems and one long poem that provide evidence for this dialect.
The vocabulary of EOJ is largely inherited from Japonic roots, but it also contains unique loanwords from Ainu and Koreanic languages, with very few words of Sinitic (Chinese) origin. This distinguishes its lexicon from the Western varieties.
Vocabulary Comparison
| English | Eastern Old Japanese | Modern Japanese |
|---|---|---|
| Girl | kwo | — |
| Mountain | yama | yama |
| Flower | pana | hana |
| Word | kötö | kotoba |
| Father | titi | chichi |
| Mother | papa | haha |
| Person | pyitö | hito |
| River | kapa | kawa |
| Horse | muma | uma |
| Snow | yökyi | yuki |
The Legacy of Eastern Old Japanese
Between the 8th and 12th centuries, the dialects of Eastern Old Japanese were largely replaced by the Kyoto dialect of Early Middle Japanese, which descended from Western Old Japanese. However, the language did not vanish entirely without a trace.
The Hachijō language, spoken on the Izu Islands, is considered a relic of this era. It shares specific characteristics with Eastern Old Japanese that are not found in any other branch of the Japonic family. Additionally, modern Eastern Japanese dialects still contain "substrate" traces—linguistic leftovers—such as specific verb suffixes and imperative forms.
There is also ongoing academic debate regarding the relationship between Eastern Old Japanese and the Ryukyuan languages. Some scholars, like Maner Lawton Thorpe, suggest they may share a common ancestor. However, other researchers, such as Alexander Koji Makiyama, argue that the similarities may be coincidental or the result of contact rather than direct descent, noting that the evidence for shared sound changes is not consistently strong.
Frequently Asked Questions
What are the main sources used to study Eastern Old Japanese?
The language is mainly studied through 8th-century poem collections and anthologies, most notably the Man'yōshū, the Kokin wakashū, and the Fudoki.
How does Eastern Old Japanese differ from Western Old Japanese?
They differ in geography, vocabulary, and phonology. For example, the vowel systems are different, and the Eastern variety contains loanwords from Ainu and Koreanic languages that are not present in the West.
Is Eastern Old Japanese still spoken today?
While it was replaced by the Kyoto dialect centuries ago, the Hachijō language on the Izu Islands is considered a relic that shares common characteristics with Eastern Old Japanese.
What is the word order of Eastern Old Japanese?
It follows a subject–object–verb (SOV) word order, which is typical of many Japonic languages.
Was Eastern Old Japanese a single unified language?
No, it was a collection of various dialects spoken across different provinces in the eastern part of Japan, with varying degrees of divergence between them.