おとな〔大人〕 〈名〉1. A grown-up (person); an adult; a man ◆大人になる　to grow up―attain man's estate―arrive at manhood―(女なら)―arrive at womanhood ◆少年が大人になる　A boy grows into a man. ◆親が死ぬと子どもは急に大人になるものだ　The loss of his parents will make a man of a boy. ◆君は東京へ来て大人になった　Tokyo life has made a man of you. ◆この子は大人のような口の利きようをする　The child talks as if he were a man―talks like a man. 2. (=大人らしい人)a man of moderate views ◆あの人のいうことは大人だ　He has moderate views. ◆人は年をとると大人になる　As a man grows older, he will grow in moderation.