godan verb (-su), transitive verb
rock the left hand (for vibrato on a koto, etc.)
Archaic technical term for a koto playing technique; the modern verb is ゆする. Used in historical or traditional music contexts.
古い箏の教本には「左手を揺す」という記述が見られる。
In old koto instruction books, one can find descriptions like 'rock the left hand'.
Archaic kanji spelling; the verb is now normally written in kana as ゆする.
Kana stem form; the modern verb is ゆする. This form may appear in dictionaries or historical contexts.
Modern form of the same verb, used for general shaking or rocking, not limited to koto technique.
The historical derivation is uncertain; the kanji 揺 means 'shake' or 'sway', and the verb is related to 揺する (yusuru).