Konkōkenshū

Konkōkenshū (混効験集; literally "list of mixed effective [words]") is the first dictionary of the Okinawan language and the first of any Ryukyuan language. The dictionary was compiled by a group of seven people under the order of King Shō Tei, dated no later than 1711.

Konkōkenshū contains many archaic words and expressions remembered by an elder woman of the royal court that served three kings, and cites works such as the Omoro Sōshi, an Old Okinawan anthology, The Tale of Genji, and The Tales of Ise, which are works written in Early Middle Japanese.