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mum1

Syllabification: (mum)

Pronunciation: /məm/

Translate mum | into French | into German | into Italian | into Spanish

Definition of mum

adjective

silent.

Phrases

keep mum: informal remain silent, especially so as not to reveal a secret:he was keeping mum about a possible move to Canada
mum's the word: informal (as a request or warning) say nothing; don’t reveal a secret.