Mum

1. (a.) Silent; not speaking.

2. (interj.) Be silent! Hush!

3. (n.) Silence.

4. (n.) A sort of strong beer, originally made in Brunswick, Germany.

Thesaurus Entries

anaudic, aphasic, aphonic, breathless, brief, brusque, close, close-tongued, closemouthed, concise, curt, dumb, dumbfounded, dumbstricken, dumbstruck, economical of words, inarticulate, indisposed to talk, laconic, ma, mam, mama, mammy, mater, mom, mommy, mummy, mute, old woman, quiet, short, silent, snug, sparing of words, speechless, stricken dumb, taciturn, terse, tight-lipped, tongue-tied, tongueless, unloquacious, untalkative, voiceless, word-bound, wordless