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calmness; composure; presence of mind
stability; steadiness
彼女はどんな場面でも落着きを失わない人だ。
She is someone who never loses her composure in any situation.
面接では落着きのある態度が高く評価される。
A composed demeanor is highly valued in job interviews.
子供たちに落着きがなくて先生が困っていた。
The teacher was struggling because the children lacked composure.