mouth off
verb
mouthed off; mouthing off; mouths off
informal
: to talk in a loud, unpleasant, or rude way
He got in trouble again for mouthing off to his teacher.
She's always mouthing off about how much better she could run the company herself.
Examples of mouth off in a Sentence
Recent Examples on the Web
And Brinson could tell that this new inmate, Jennifer Gomez, was raging — fighting with other inmates, mouthing off to the guards.
—
Alex Morris, Rolling Stone, 19 Mar. 2026
His biggest expression forever has been fighting or mouthing off.
—Dalton Ross, Entertainment Weekly, 20 Oct. 2025
The mix of government regulation, broadcaster responsibilities, and the public interest in allowing entertainers to mouth off over the airwaves has come into sharp relief recently due to a single line in a monologue by Jimmy Kimmel.
—Thomas Doherty, HollywoodReporter, 30 Sep. 2025
Episode 4 flips the script on the trope of a friend screwing up by mouthing off to the wrong person at the worst time.
—Ben Travers, IndieWire, 6 Aug. 2025
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Alex Morris, Rolling Stone, 19 Mar. 2026
His biggest expression forever has been fighting or mouthing off.
—Dalton Ross, Entertainment Weekly, 20 Oct. 2025
The mix of government regulation, broadcaster responsibilities, and the public interest in allowing entertainers to mouth off over the airwaves has come into sharp relief recently due to a single line in a monologue by Jimmy Kimmel.
—Thomas Doherty, HollywoodReporter, 30 Sep. 2025
Episode 4 flips the script on the trope of a friend screwing up by mouthing off to the wrong person at the worst time.
—Ben Travers, IndieWire, 6 Aug. 2025
Cite this Entry
“Mouth off.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mouth%20off. Accessed 23 Apr. 2026.
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