could care less

IPA(Pronunciation)

Verb

US proscribed sometimes

(US, sometimes proscribed) To not care at all; to have no concern or interest; to be apathetic.

Japanese Meaning

全く気に留めない / 全く興味を持たない / 無関心である

She could care less about what they think and walked away smiling.

彼女は他人がどう思うかをまったく気にせず、微笑んで立ち去った。

Sense（1）

(US, sometimes proscribed) To not care at all; to have no concern or interest; to be apathetic.

could have cared less

（ past perfect ）