cavalier /ˌkævəˈliɚ/ adjective Learner's definition of CAVALIER
[more cavalier; most cavalier] disapproving
: having or showing no concern for something that is important or serious漠不关心的;傲慢的 -
They are too cavalier in their treatment of others.他们对待别人很傲慢。
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The writer is very cavalier [=careless] about the truth.作者无视事实真相。
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She has a cavalier attitude about/towards spending money.她对花钱毫不在意。
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He has a cavalier disregard for the rights of others.他漠视他人权利。