mouth off
US /maʊθ ɔf/
UK /maʊθ ɔf/
1.
responder mal, ser insolente
to speak in an insolent or disrespectful way, especially to someone in authority
:
•
He got fired for mouthing off to his boss.
Ele foi demitido por responder mal ao chefe.
•
Don't mouth off to your elders.
Não responda mal aos seus mais velhos.