mum meaning and definition

MUM noun

Definition of mum (noun)

1. of China
   • synonyms: Chrysanthemum morifolium, Dendranthema grandifloruom, florists' chrysanthemum, florist's chrysanthemum
2. informal terms for a mother
   • synonyms: ma, mama, mamma, mammy, mom, momma, mommy, mummy
3. secrecy
   • "mum's the word"

MUM adjective

Definition of mum (adjective)

1. failing to speak or communicate etc when expected to
   • "the witness remained silent"
   • synonyms: silent