in his right mind

in his right mind の類語

in their right minds, in her right mind, sane

in his right mind の反意語

insane

in his right mind の言い換えを探すには

in his right mind（）の類語・言い換え（パラフレーズ）を、日本語訳つきで関連度順に並べています。英作文の語彙を増やしたいとき、長文読解で本文と選択肢の言い換えを見抜きたいときに使えます。