Learn what "i can keep my mouth shut" means, when people say it, and how to use it naturally in English.

It means the speaker promises not to talk about something or share a secret.
From The Perfect Husband, Episode 5
Someone says they can stay quiet and not reveal anything.
Use this when promising silence or discretion. It can sound casual, but also a little rough or defensive depending on tone.
Scenes unlock real expressions as you watch
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