mum's the word

means to keep this a secret; don't tell anybody

I don't want anybody to know about this affair until next week, so mum's the word!

by Venera December 22, 2005

mum's the word

keep quiet about it (possibly from the sound one makes when trying to speak with closed lips, Attributed to William Shakespeare)

Remember, until further notice, mum's the word.

by The Return of Light Joker January 9, 2010

mums the word

to keep quiet about something

I heard Elaine's parents are out of town tonight and she's lonely! I'm gonna go over. Mums the word!

by P Ha September 30, 2004

mums the word

to keep quiet about something; my lips are sealed.
mum means mmmmmm (the sound made when putting your lips together)
came from Shakespeare quote:
"Seal up your lips and give no words but mum."

person 1: "Please don't tell anyone about my affair."

person 2: "Don't worry i won't. Mums the word."

by bnm15 July 4, 2009

MUMs The Word

A criticism pertaining the management, when criticising middle management or other useless and expensive building hold backs, Gölök Buday, the Black Jester would say "MUMs the word," going back to the 2000 election when Maharishi's university of Management started getting noticed, ala John Hageline.

Products would cost less if they spent less of tedious corporate bureaucracy, MUMs the Word!

by pornstitute August 16, 2023