Meaning & use

mum

noun, adjective·EverydayBritishinformal

Last updated

UK/mʌm/
US/mʌm/

Meanings

  1. nouncountableBritishinformal

    A child's or grown-up's everyday word for their mother, used in British, Irish and Commonwealth English.

    Grammar: Used like a name with no article when talking to her: Hi, Mum. Otherwise with my/your/the: my mum.

    Patterns

    • someone's mum
    • Mum and Dad

    My mum rings me every Sunday evening.

    Can Jack's mum give us a lift to the match?

    Mum, have you seen my keys?

  2. adjectiveafter a verbinformalold-fashioned

    Keeping quiet and unwilling to reveal something that is meant to be secret.

    Grammar: Only used after a verb, mostly in the phrase keep mum: she kept mum.

    Patterns

    • keep mum about something
    • mum's the word

    The twins kept mum about the surprise party.

    He stayed mum when the manager asked who had taken the cake.

    Mum's the word until the announcement on Friday.

Word forms

pluralmums

Common combinations

mum and dad
Mum and dad are coming to watch my graduation.
stay-at-home mum
She was a stay-at-home mum until the youngest started school.
single mum
My neighbour is a single mum with three boys.
keep mum
Please keep mum about the trip until I tell them.
mum's the word
I will not tell anyone; mum's the word.

Synonyms and how they differ

mother
Mother is neutral and suits formal writing, while mum is warm and used in everyday speech.
mummy
Mummy is more childlike and used mainly by young children or in a tender way.
mom
Mom is the American spelling and form of the same everyday word.
silent
Silent is the general adjective, while mum is informal and means silent on purpose about a secret.

Word family

mummy noun
a child's word for mother
mum-to-be noun
a woman who is pregnant
mumsy adjective
dowdy and old-fashioned in a motherly way
grandmum noun
informal word for a grandmother

Commonly confused: mum or mom? mum or mummy?

mum vs mom

Mom is the American spelling, and mum is the British one. Both mean mother.

mum vs mummy

A mummy can also be a preserved ancient body, so mum is not a safe substitute for that meaning.

Practice

Which sentence uses mum correctly to mean saying nothing about a secret?

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