The main language spoken in Okinawa is Okinawan, which is a dialect of the Ryukyuan language. However, Japanese is also widely spoken and used for official purposes.
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No. It is a member of the Japonic (or Japanese-Ryukyuan)
language family, whose relation to other language groups is
debated.
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Japanese is one of the languages that are considered Japonic. In
the Japonic classification, there are other two languages, which
are Ryukyuan and Yayoi.
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Seikichi Yoshimoto has written:
'Itsumade mo nokoshitai Donan no kotoba' -- subject(s):
Dialects, Ryukyuan language