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to shut one's mouth

to shut one's mouth

4 4.4
To stop talking to keep a secret or when told to be quiet
  • idiom
  • Informal
translation icon : cerrar la boca
  • She knew the secret was important, so she chose to shut her mouth about it.
  • just shut one's mouth
  • then shut one's mouth

Examples

  • Now shut your mouth and give your money to Koko.

  • Shut your mouth and quit being a freak!

  • - Maybe you should shut your mouth.

  • You need to learn to shut your mouth.

  • I said shut your mouth!

  • - Shut your mouth and do it.

  • I asked again, but she just shut her mouth, Pam, and looked far away.

    Fiction book (1996)
  • One would think Carter would have the sense to shut his mouth after his epic repudiation by the American public.

    Blog text (17)
  • You're not suggesting that Cain needs to just shut his mouth, are you?

    Blog text (23)
  • Dad answers in a mutter, then looks in my direction and shuts his mouth instantly.

    Fiction book (2001)

Synonyms

to shut up
vsto shut one's mouth
  • Offensive
4.1

Tell someone to be quiet in a rude or angry way

can be used politely or for secrecy, not always rude
to be quiet
vsto shut one's mouth
231 1.0

To stop making noise or talking

can also mean silence aimed specifically at hiding information
to keep one's mouth shut
vsto shut one's mouth
  • Informal
116 5.6

To say nothing to avoid trouble or keep a secret

is the same but emphasizes secrecy or being told to be quiet
to hold back
vsto shut one's mouth
108 4.2

Keep yourself from showing feelings or telling others

is focused specifically on stopping speech or keeping secrets
to keep quiet
vsto shut one's mouth
90 2.5

To say nothing or not tell a secret

adds a stronger sense of secrecy or being told to stop speaking
to pipe down
vsto shut one's mouth
  • Informal
35 7.1

To become quiet or tell someone to stop making noise

can cover quiet for secrecy or firm orders as well
to hush
vsto shut one's mouth
33 3.4

Make a person or thing quiet so others stop making noise

means staying silent oneself rather than calming others
to close up
vsto shut one's mouth
10 4.8

To stop talking and say nothing

is similar but often includes intentional secrecy or obeying orders
mum's the word
vsto shut one's mouth
  • Informal
5 8.2

Keep quiet about a secret

covers that secrecy but also simple silence when told to stop
to button up
vsto shut one's mouth
  • Informal
3 7.1

To stop talking suddenly and not answer questions

can also mean staying quiet to keep secrets or when told
to hold one's tongue
vsto shut one's mouth
  • Informal
3 5.4

To stay silent to avoid saying something rude

also covers silence to hide information or when told to stop
to keep mum
vsto shut one's mouth
  • Informal
3 7.5

Stay quiet about something private

means the same silence but can include being told to be quiet
to hush up
vsto shut one's mouth
  • Informal
2 5.0

Make someone stop talking and be quiet

includes voluntary silence as well as being silenced by others
to bite one's tongue
vsto shut one's mouth
  • Informal
1 6.1

Stop yourself from saying something you want to say because it would be rude

includes that self-control but also silence due to orders or secrecy
to keep shtum
vsto shut one's mouth
  • Slang
1 9.9

To stay silent on purpose to avoid trouble

includes that deliberate silence but also general quietness when told
to keep one's cakehole shut
vsto shut one's mouth
  • Offensive
9.9

Not say anything or tell other people

is similar but neutral rather than specifically informal or blunt
to zip someone's lip
vsto shut one's mouth
  • Informal
8.4

To keep quiet and not tell others about something

covers personal silence as well as being silenced by others
to button one's lip
vsto shut one's mouth
  • Informal
7.2

To keep quiet on purpose and not tell others

is similar but can also mean briefly staying quiet when told
to shut one's gob
vsto shut one's mouth
  • UK
9.9

To tell someone rudely to be quiet

is broader and includes quietness for secrecy or gentle requests
to belt up
vsto shut one's mouth
  • Offensive
9.2

To tell someone to stop talking and be quiet

also covers quietness for secrecy or being told gently
to shut one's assmouth
vsto shut one's mouth
  • Offensive
9.9

Tells someone to be quiet in a rude way

expresses the same stop-talking idea in a neutral or polite way

Antonyms

1.0

To talk with someone to share thoughts or feelings

947 1.0

A discussion where people share ideas or feelings

How Forceful

to shut one's assmouth
  • Offensive
9.9
to shut up
  • Offensive
4.1
to shut one's mouth
  • Informal
4 4.4
to be quiet
231 1.0

Surface Forms

shut one's mouth infinitive
shut one's mouth past participle
shutting one's mouth present participle
shuts one's mouth third person singular

Morphology

shut + one's + mouth

The meaning 'to stop talking' is directly and literally derived from combining 'shut' (to close) with 'one's mouth' (the speech organ of a person), so a B1 learner who knows the constituent words can infer the intended sense. This is a common, cross-linguistic compositional construction (imperative to be quiet) rather than a figurative idiom, making it transparent.

Etymology

The phrase shut one's mouth comes from the simple image of someone shutting their mouth so no words can get out. That's why it now means 'to stop talking' or 'to keep a secret'.