mum

adjective

1. failing to speak or communicate when expected to

Similar word(s): incommunicative, uncommunicative, silent

interjection

1. stop speaking! hush!

noun

1. of China

Definition categories: plant, chrysanthemum

2. informal terms for a mother

Similar word(s): ma, mama, mamma, mammy, mom, momma, mommy, mummy

Definition categories: person, mother

3. secrecy

- mum's the word

Definition categories: attribute, secrecy, secretiveness, silence

verb

1. to act in a pantomime or dumb show