mouth off phrasal verbphr v informal COMPLAINto complain angrily and noisily about something, or talk as if you know more than anyone else 愤怒而大声地抱怨;大发议论,卖弄地说话 at/to You should have heard Pete mouthing off at Joe. 你真该听听皮特是怎么痛骂乔的。
about Morris was mouthing off about his former team. 莫里斯在大谈特谈他以前的球队。
mouth at/to• Instead of quitting the music business she should have learned to use it for singing rather than mouthing off at every opportunity.
→ mouth off at mouth2(1)