mouth off
phrasal 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
People have been mouthing off on social media about the different things that Ozempic and other glucagon-like peptide-1 receptor agonists can supposedly do to, well, the inside of your mouth.
—
Bruce Y. Lee, Forbes.com, 24 May 2025
Talking of having to listen involuntarily to people mouthing off on subjects that should be banned, the recitation of a prior night’s dream has to be the worst.
—Louis J. Esterhazy, WWD, 20 Feb. 2025
Paying tribute to an underappreciated profession, Late Shift offers a portrait of workaday courage, not least when Floria mouths off to a surgeon on behalf of a patient who feels abandoned.
—Sheri Linden, The Hollywood Reporter, 19 Feb. 2025
Brushing before breakfast gets your mouth off to a fresh start.
—Nancy Lebrun, Verywell Health, 10 Jan. 2025
As Trump shoots his mouth off while L.A. burns, his claims about fire hydrants don’t hold water, columnist George Skelton writes.
—Ryan Fonseca, Los Angeles Times, 10 Jan. 2025
In 2007, cameras caught him mouthing off to civilians about the Lakers, saying several teammates needed to be shipped out, in a mall parking lot.
—Jayson Buford, Rolling Stone, 13 Feb. 2024
Curtis told me that the kid was mouthing off, talking about how the retreating glaciers ground down whatever mountains were here, pulverized them into the bed of an ancient sea.
—Hazlitt, 20 Sep. 2023
By Thursday, Bryan was arrested after mouthing off to a police officer after Bryan’s security guard got pulled over.
—Ethan Millman, Rolling Stone, 11 Sep. 2023
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Bruce Y. Lee, Forbes.com, 24 May 2025
Talking of having to listen involuntarily to people mouthing off on subjects that should be banned, the recitation of a prior night’s dream has to be the worst.
—Louis J. Esterhazy, WWD, 20 Feb. 2025
Paying tribute to an underappreciated profession, Late Shift offers a portrait of workaday courage, not least when Floria mouths off to a surgeon on behalf of a patient who feels abandoned.
—Sheri Linden, The Hollywood Reporter, 19 Feb. 2025
Brushing before breakfast gets your mouth off to a fresh start.
—Nancy Lebrun, Verywell Health, 10 Jan. 2025
As Trump shoots his mouth off while L.A. burns, his claims about fire hydrants don’t hold water, columnist George Skelton writes.
—Ryan Fonseca, Los Angeles Times, 10 Jan. 2025
In 2007, cameras caught him mouthing off to civilians about the Lakers, saying several teammates needed to be shipped out, in a mall parking lot.
—Jayson Buford, Rolling Stone, 13 Feb. 2024
Curtis told me that the kid was mouthing off, talking about how the retreating glaciers ground down whatever mountains were here, pulverized them into the bed of an ancient sea.
—Hazlitt, 20 Sep. 2023
By Thursday, Bryan was arrested after mouthing off to a police officer after Bryan’s security guard got pulled over.
—Ethan Millman, Rolling Stone, 11 Sep. 2023
Cite this Entry
“Mouth off.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mouth%20off. Accessed 15 Jul. 2025.
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