- silent; not saying a word: to keep mum.
- (used to demand immediate silence.)
- do not reveal what you know (about something); keep silent: Mum's the word, or the surprise party won't be a surprise.
- to say “mum”; call for silence.
- to act as a mummer.
- a strong beer or ale, first made in Brunswick, Germany.
- mainly British an informal word for mother 1
- keeping information to oneself; silent
- silence or secrecy is to be observed
- to act in a mummer's play
- a type of beer made from cereals, beans, etc
