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keep one's mouth shut

Definitions of keep one's mouth shut
  1. verb
    refrain from divulging sensitive information; keep quiet about confidential information
    synonyms: keep quiet, shut one's mouth
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    Antonyms:
    babble, babble out, blab, blab out, let the cat out of the bag, peach, sing, spill the beans, talk, tattle
    divulge confidential information or secrets
    spill, talk
    reveal information
    show more antonyms...
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