shut one's mouth

idiom

Definition of shut one's mouth

informal
used to tell someone in a rude way to stop talkingShe angrily told him to shut his mouth.

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“Shut one's mouth.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/shut%20one%27s%20mouth. Accessed 16 December 2019.

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