Please shut your mouth while the teacher is talking.
shut one's mouth
idiomTo stop talking; to be quiet.
He knew he should shut his mouth, but he could not stop himself from arguing with his boss.
Realizing that any further protest would only worsen his precarious situation, he decided to shut his mouth and accept the judge's final decision.
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abound in one's own sense
To follow one’s own inclinations and opinions.
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ace up one's sleeve
A surprise advantage of which others are not aware.
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act one's age
To behave in a manner appropriate to one's age.
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act one's age, not one's shoe size
Synonym of act one's age (“to behave in a mature manner; to avoid being childish”).
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afraid of one's own shadow
Exceptionally timid.
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air one's dirty laundry in public
To reveal one's sordid secrets to the public.
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air one's dirty linen in public
Synonym of air one's dirty laundry in public.
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albatross around one's neck
A characteristic, possession, associate, or previous deed that hinders one's ability to succeed.
Last updated July 12, 2026