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Synonyms

mouth off

British  

verb

  1. informal to give an opinion or speak emotionally, often without much care or consideration

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
mouth off Idioms  

  1. Complain or express one's opinions loudly and indiscreetly, as in She was always mouthing off about the other members . [ Slang ; 1960s]

  2. Speak impudently, talk back, as in He got in trouble by mouthing off to his teacher . [ Slang ; 1960s]

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Horseradish isn’t clamoring to burn your mouth off.

From Salon • Sep. 2, 2025

It is a case study in the dilemma UK ministers face: they are striving to have a close and productive relationship with a White House known for shooting its mouth off.

From BBC • Mar. 5, 2025

"She's trying to defend her daughter, why doesn't she stop shouting her mouth off and take ownership of how she raised her daughter," Imbriale told Fox News Digital Tuesday.

From Fox News • Jan. 11, 2022

If you’re gonna shoot your mouth off we’d suggest: Go on and don a suit, those shirt sleeves just ain’t cute ...

From Washington Post • Dec. 5, 2019

I read in one of Papi’s business etiquette books that you should never write an e-mail or a letter when you’re mad because you’re likely to shoot your mouth off and say something you’ll regret.

From "Merci Suárez Changes Gears" by Meg Medina

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.