to mouth off
[phrase form: mouth]
01
大声抱怨, 嘟囔
to complain or speak loudly in an immoderate way
Slang
例子
They kept mouthing off about the price increases.
他们一直在大声抱怨价格上涨。
02
顶嘴, 无礼地说话
to speak rudely or disrespectfully, especially to someone in authority
Slang例子
Do n't mouth off to your boss; you'll regret it.
不要对你的老板出言不逊；你会后悔的。
