"mouth off" in Chinese (Traditional)
頂嘴亂說話出口無狀
Definition
以粗魯、不尊重的方式說話，常常抱怨或批評，尤其是對權威人士。
Usage Notes (Chinese (Traditional))
屬於非正式用語，語氣有些無禮。常指對權威人物（如家長或老師）頂嘴或不尊重。可與「頂嘴」等詞互換。避免在正式場合使用。
Examples
Don't mouth off to your teacher.
不要對你的老師**頂嘴**。
He got in trouble for mouthing off in class.
他因為在課堂上**亂說話**而惹上麻煩。
Kids should learn not to mouth off at their parents.
孩子們應該學會不要對父母**頂嘴**。
Why are you always mouthing off when someone gives you advice?
別人給你建議時，你為什麼總是**頂嘴**？
You shouldn't mouth off at your boss if you want to keep your job.
如果你想保住工作，就不該對老闆**頂嘴**。
He got suspended for mouthing off at the coach during the game.
他因為在比賽時對教練**頂嘴**被禁賽了。