flippancy
[ˈflɪpənsɪ]
n.
无礼;
轻率;
无礼的行动（或言语）;
轻率的行动（或言语）;
例句:
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They accused her of flippancy and subjectivity in her reporting of events in their country.
他们指责她在报道他们国家的事件时轻率而主观。
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He was disconsidered with his friends for his flippancy.
他因言行轻浮而失去朋友的尊重.
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Not a fit time for flippancy.
不是放肆的时候
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They are a combination of flippancy and insight; of jangly pop and full-throttle riffs.
来自BBC