couldn't care less

動詞

慣用表現

(idiomatic) to not care at all; to have no interest or concern; to be apathetic.

日本語の意味

全く気にしない / 全く興味がない / 無関心である

She couldn't care less what people think about her fashion choices.

彼女は自分のファッションについて人々がどう思うかをまったく気にしていない。

意味（1）

(idiomatic) to not care at all; to have no interest or concern; to be apathetic.

I used to be so careless / As if I couldn't care less

couldn't have cared less

（ past ）