mum /mʌm/noun 6adjective 2verb 2exclamation 1forms 3 noun6 •(informal) someone's motherI wish Mum and Dad didn't argue so much. •(UK, informal) motherFrom the Marvel Mixmaster to the Miracle Microwave, every time a new-fangled gadget has lobbed into the Aussie kitchen, Aussie mums have changed their cooking styles accordingly. — 1987 •(US) A chrysanthemum. •(US) A decoration traditionally made of chrysanthemums and ribbons, worn by girls at high school homecoming celebrations, marked with indicators such as the wearer's name, school, the year, and so on. •A type of strong beer, originally made in Brunswick, Germany.The clamorous crowd is hushed with mugs of mum. — 1728 •(no longer used) Silence.Entrust it under solemn Vows / Of Mum and Silence,[…] — 1677 adjective2 •(informal) Secret.“Come here, friend,” sternly from the doctor. “Now I give you the way inside if you’ll promise to keep it mum.” — 1922 •(informal) Silent.The citizens are mum, and speak not a word. — 1593 verb2 •To act in a pantomime or dumb show. •(slang, no longer used) To silence."Well, Sal, you mum your dubber pretty generally, but when you do slacken your glib you may as well do it civilly." — 1857 exclamation1 •stop speaking!, stop talking!, hush!Mum, then, and no more. — 1610 formsmummed · mumming · mums