轻举妄动

act rashly, act recklessly

verb Rare #26,088
act rashly, act recklessly Usually used in negative contexts, often with 不 or 别.
CH: 在没有充分了解情况之前,不要轻举妄动。
EN: Don't act rashly before fully understanding the situation.

轻举妄动

Don't make any rash moves.

— 精英部队 (2007)

大家不要轻举妄动

Everyone, don't make any rash moves.

— 警察故事 (1985)

不过千万不要轻举妄动

But whatever you do, don't make any rash moves.

— 趣味游戏 (1997)

不准轻举妄动

Don't make any rash moves.

— 精英部队2:大敌当前 (2010)