nonchalant

IPA（発音記号）

Casually calm and relaxed. / Indifferent; unconcerned; behaving as if detached.

日本語の意味

落ち着いて余裕のある / 無頓着で無関心な / 冷静かつ自然体な

She gave a nonchalant shrug when the teacher announced the surprise quiz.

先生がサプライズの小テストを発表したとき、彼女は何食わぬ顔で肩をすくめた。

意味（1）

Casually calm and relaxed.

We handled the whole frenetic situation with a nonchalant attitude.

意味（2）

Indifferent; unconcerned; behaving as if detached.

He is far too nonchalant about such a serious matter.

more nonchalant

（ comparative ）

most nonchalant

（ superlative ）