mouth off

US /maʊθ ɔf/
UK /maʊθ ɔf/
"mouth off" picture
1.

berbicara tidak sopan, berkata kasar

to speak in an insolent or disrespectful way, especially to someone in authority

:
He got fired for mouthing off to his boss.
Dia dipecat karena berbicara tidak sopan kepada bosnya.
Don't mouth off to your elders.
Jangan berbicara tidak sopan kepada orang yang lebih tua.