What is the meaning of keep one's mouth shut?

verb

  • Refrain from divulging sensitive information; keep quiet about confidential information.
    • usage: "Don't tell him any secrets-he cannot keep his mouth shut"
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). keep one's mouth shut. Retrieved September 27, 2026, from http://smartdefine.org/keep_one%27s_mouth_shut/definitions/1289399
ChicagoWordNet. 2010. "keep one's mouth shut" http://smartdefine.org/keep_one%27s_mouth_shut/definitions/1289399 (accessed September 27, 2026).
HarvardWordNet 2010, keep one's mouth shut, Smart Define, viewed 27 September, 2026, <http://smartdefine.org/keep_one%27s_mouth_shut/definitions/1289399>.
MLAWordNet. "keep one's mouth shut" 23 October 2010. Web. 27 September 2026. <http://smartdefine.org/keep_one%27s_mouth_shut/definitions/1289399>