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keep one's mouth shut
Idioms and Phrases
Be quiet; don't reveal confidential information. For example, The teachers told us to keep our mouths shut during the entire presentation , or You can't tell Carol anything; she's incapable of keeping her mouth shut . Also see hold one's tongue .Example Sentences
It's perhaps wiser to keep one's mouth shut if you don't know the words, as former Welsh Secretary John Redwood discovered in 1993 as he struggled to mime along to Hen Wlad Fy Nhadau.
Moreover, in life I have found it the best policy to keep one's mouth shut.
"Perhaps it is as well that the laws of politeness keep one's mouth shut at times, and that we do not say what we feel."
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
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