|Region||Tokunoshima of the Amami Islands, Kagoshima Prefecture|
The Tokunoshima language (シマグチ（島口） Shimaguchi or シマユミィタ Shimayumiita), also Toku-No-Shima, is a dialect cluster spoken on Tokunoshima, Kagoshima Prefecture of southwestern Japan. It is part of the Amami–Okinawan languages, which are part of the Japonic languages.
Okamura (2007) posits two divisions of Tokunoshima: Kametsu–Amagi in the north and Isen in the south. Kametsu is the traditional politico-cultural center of the island. It has been a center of distributions of new lexical traits, some of which were not confined in Tokunoshima Town but spread to Amagi Town in the northeast and, less frequently, to Isen. The dialects of Isen are considered more conservative by the speakers.
According to Okamura Takahiro (b. 1936 in Asama, Amagi Town), the speakers of Tokunoshima call their tongues sïmagucï, which consists of two morphemes. The first part sïma (Standard Japanese shima) refers to an island both in Standard Japanese and Tokunoshima but it also means (one's own) local community in Tokunoshima and other Amami dialects. The second part kucï (Standard Japanese kuchi) means a mouth, and by extension, speech. Hence, sïmagucï refers to the speech of one's own community and of the island as a whole. Note that sïmagucï is more strongly associated with the former because the speakers of Tokunoshima are fully aware that each shima has a distinct language.
As with most Ryukyuan languages to the north of Central Okinawan, stops are described as "plain" C’ and "glottolized" C‘. Phonetically, the two series are lightly aspirated [Cʰ] and tenuis [C˭], respectively.
- The zero onset /'/ may be added. It is contrasted with glottal /h/ and /ʔ/.
- /h/ is [ç] before /i/ and /j/, and [ɸ] before /u/ and /w/.
- /pʰ/ is new and infrequent.
- /si/, /t͡ʃʰɨ/ and /t͡ʃ˭ɨ/ are realized as [ʃɪ], [t͡sʰɨ] and [t͡sɨ], respectively.
- /dz/ is [d͡z] before /h/ and /ɘ/, and [d͡ʒ] elsewhere.
- [ʃa], [ʃe], [ʃu] and [ʃo] are phonemically analyzed as /sja/, /sje/, /sju/ and /sjo/, respectively.
- [t͡ʃʰa], [t͡ʃʰe], [t͡ʃʰu] and [t͡ʃʰo] are phonemically analyzed as /t͡ʃʰja/, /t͡ʃʰje/, /t͡ʃʰju/ and /t͡ʃʰjo/, respectively.
- [t͡ʃa], [t͡ʃu] and [t͡ʃo] are phonemically analyzed as /t͡ʃ˭ja/, /t͡ʃ˭ju/ and /t͡ʃ˭jo/, respectively.
Tokunoshima has /a/, /e/, /i/, /o/, /u/, /h/ and /ɘ/, long and short.
Correspondences to Standard Japanese
Only major sound correspondences are listed.
- Standard Japanese /e/ mostly corresponds to /h/.
- Standard Japanese /o/ is merged into /u/.
- Tokunoshima /e/, /ɘ/ and /o/ are of secondary origin and mostly correspond to Standard Japanese diphthongs.
- Standard Japanese /hi/ and /he/ corresponds to Tokunoshima /sɨ/ and /hwɨ/, respectively.
- Standard Japanese /si/ and /zu/, /zi/ and /zu/, and /t͡ʃi/ and /t͡ʃu/ are merged into /sɨ/, /zɨ/, and /t͡ʃɨ/, respectively.
- The fusion of two consecutive morae resulted in glottalized consonants in Tokunoshima.
- Tokunoshima hōgen jiten (2014) by Okamura Takahiro, Sawaki Motoei, Nakajima Yumi, Fukushima Chitsuko and Kikuchi Satoru. Based on Okamura's Asama dialect.
- Tokunoshima at Ethnologue (18th ed., 2015)
- Hammarström, Harald; Forkel, Robert; Haspelmath, Martin; Bank, Sebastian, eds. (2016). "Toku-No-Shima". Glottolog 2.7. Jena: Max Planck Institute for the Science of Human History.
- Okamura Takahiro 岡村隆博 (2007). Amami hōgen: kana moji de no kakikata 奄美方言—カナ文字での書き方 (in Japanese).
- Shibata Takeshi 柴田武; et al. (1977). Amami Tokunoshima no kotoba 奄美徳之島のことば (in Japanese). pp. 42–43.
- Hirayama Teruo 平山輝男, ed. (1986). Amami hōgen kiso goi no kenkyū 奄美方言基礎語彙の研究 (in Japanese).
- Samuel E. Martin (1970) "Shodon: A Dialect of the Northern Ryukyus", in the Journal of the American Oriental Society, vol. 90, no. 1 (Jan–Mar), pp. 97–139.