合あいの手てを打うつConjugationMeanings1expression, godan verb (-tsu)interject; chime in; interruptcolloquialColloquial phrase; originally a mistaken variant of 合いの手を入れる, but now used for interjecting a remark or gesture during a conversation or performance. Often carries a casual, slightly intrusive feel.See also: 合いの手を入れる彼かれは話はなしの途と中ちゅうで合あいの手てを打うつ癖くせが