Word.ws English Dictionary

mum's the word

mum's the word phrase: indicates that something is a secret and not to be divulged.

Phrase

mum's the word

  1. (idiomatic) Indicates that something is a secret and not to be divulged.
    • She doesn't know anything about it yet, so mum's the word, OK?
    • … and that mum is the word till I give you liberty to speak1879, Anna Katharine Green, The Leavenworth Case: A Lawyer's Story, G. P. Putnam's Sons, page 256

mum's the word meaning in Arabic and Persian

mum's the word in Arabic

indicates that something is a secret
السر في بئر

mum's the word in Persian

indicates that something is a secret
شتر دیدی ندیدی šotor didi nadidi

Origin of mum's the word

From mum (“silence”). Recorded since 1704.

Questions about mum's the word

What does mum's the word mean?
Mum's the word means indicates that something is a secret and not to be divulged.
What is mum's the word in Arabic?
Mum's the word in Arabic is السر في بئر. See Mum's the word meaning in Arabic.
What part of speech is mum's the word?
Mum's the word is a phrase.

Words near mum's the word in the dictionary

  1. Mulvoys
  2. Mulwala
  3. Mulyandry
  4. mum
  5. mum jeans
  6. mum's the word
  7. mum-in-law
  8. Muma
  9. mumak
  10. mumakil
  11. Mumas

Source and license

Adapted from Wiktionary: mum's the word (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: En-au-mum's_the_word.ogg.

Cite this entry: “mum's the word.” Word.ws, https://word.ws/mum%27s_the_word. Based on Wiktionary, CC BY-SA 4.0.