keep one's mouth shut


: to not say anything
When he starts talking about politics, I just keep my mouth shut.
: to not talk about something (such as a secret)
She told me to keep my mouth shut about the news.
I never tell him anything important because he doesn't know how to keep his mouth shut.

Dictionary Entries Near keep one's mouth shut

Cite this Entry

“Keep one's mouth shut.” Dictionary, Merriam-Webster, Accessed 21 Jul. 2024.

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