un·con·cern /ˌʌnkənˈsɚ/
漫不經心,不關心,冷淡
Un·con·cern n. Want of concern; absence of anxiety; freedom from solicitude; indifference.
A listless unconcern,
Cold, and averting from our neighbor's good. --Thomson.
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unconcern
n 1: the trait of remaining calm and seeming not to care; a
casual lack of concern [syn: nonchalance, indifference]
2: a feeling of lack of concern [ant: concern]