What is the meaning of keep mum?

Refuse to talk or stop talking; fall silent.
- usage: "The children shut up when their father approached"
- synonyms: close up, clam up, dummy up, shut up, belt up, button up, be quiet

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APA	WordNet. (2010). keep mum. Retrieved September 21, 2026, from http://smartdefine.org/keep_mum/definitions/1328562
Chicago	WordNet. 2010. "keep mum" http://smartdefine.org/keep_mum/definitions/1328562 (accessed September 21, 2026).
Harvard	WordNet 2010, keep mum, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/keep_mum/definitions/1328562>.
MLA	WordNet. "keep mum" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/keep_mum/definitions/1328562>

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