若无其事反义词：

煞有介事，若有所失，作贼心虚

【英文解释】

act as if nothing were on one's mind;(appeared) as if nothing had happened;as if nothing had occurred;as if nothing were wrong;calmly ;

【释义】

若无其事，成语，形容好像没有那么回事似的，或形容不动声色或漠不关心。

【中英例句】

而你却要我若无其事?

And you expect me to act normal?

你想装作若无其事一样去执行命令么?

Do you want to just carry on as if nothing's happened?

你知道他是什么却还若无其事的和他聊天?

You know what he is, and you're speaking to him like he's normal?

他们似乎若无其事这是内疚还是冷漠呢?

And they seem okay with it. Is that guilt or indifference?

我们告诉她这消息时，她还若无其事地笑呢。

She laughed like everything when we told her about it.