se taire ; garder le silence
Look, whatever you hear, keep your mouth shut.
Écoute, quoi que tu entendes, ferme-la.
— Volver (2006)
Yeah, like just keep your mouth shut and take the money.
Ouais, genre, ferme ta gueule et prends l'argent.
— Blow Out (1981)
You should keep your mouth shut.
Tu devrais garder ta bouche fermée.