mum

1 of 5

adjective

Synonyms of mumnext
: silent
keep mum

mum

2 of 5

verb

mummed; mumming

intransitive verb

1
: to perform in a pantomime
2
: to go about merrymaking in disguise during festivals

mum

3 of 5

noun (1)

: a strong ale or beer

mum

4 of 5

chiefly British spelling of mom

mum

5 of 5

noun

Examples of mum in a Sentence

Adjective I'd like to know how much they paid, but they've been mum on that subject. kept mum about the surprise bridal shower
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
The team was largely mum on the details of the running back's recovery throughout the season. Chantz Martin, FOXNews.com, 21 Jan. 2026 However, now, when workers are being targeted, those business and industry groups are mum. Ellen Watters, Twin Cities, 15 Jan. 2026
Verb
Smith stays largely mum on the news of the day, be that Kirk’s killing, or ICE raids, or whatever hells await in the coming weeks. Sam Kestenbaum, Vulture, 2 Jan. 2026 So did mum and dad politely decline to go or were they not invited? Madeleine Marr, Miami Herald, 8 Aug. 2025
Noun
In front of our 500 wedding guests, Marc Anthony called me to the stage, where the scheduled was planned to be my romantic dance with my wife but instead my mum was waiting to dance with me instead. Rachel McRady, PEOPLE, 20 Jan. 2026 My mum hijacked my first dance with my wife, which had been planned weeks in advance to a romantic love song. Brendan Morrow, USA Today, 20 Jan. 2026 See All Example Sentences for mum

Word History

Etymology

Adjective

Middle English mom, momme, probably imitative of a sound made with closed lips

Verb

Middle English mommen, to mumble, perform (a mummer's play), probably in part from mom, in part from Middle French momer to go masked

Noun (1)

German Mumme

First Known Use

Adjective

14th century, in the meaning defined above

Verb

15th century, in the meaning defined at sense 1

Noun (1)

circa 1623, in the meaning defined above

Noun

1891, in the meaning defined above

Time Traveler
The first known use of mum was in the 14th century

Browse Nearby Words

Cite this Entry

“Mum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mum. Accessed 22 Jan. 2026.

Kids Definition

mum

1 of 3 adjective
: silent sense 1
keep mum

mum

2 of 3 noun

mum

3 of 3

chiefly British variant of mom

More from Merriam-Webster on mum

Last Updated: - Updated example sentences
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