as in fraud
one who makes false claims of identity or expertise
don't bother to see that guy, as I've heard he's a quack with no actual training
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Example Sentences
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Recent Examples of quack
Tell that to the kids who have been hospitalized and died from measles, following quack Dr. Bobby’s Rx to avoid the shots.
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New York Daily News Editorial Board, New York Daily News, 29 May 2025
And this is why hydropathy was not like many of the other quack medical therapies of the not-quite-modern era.
—John Jeremiah Sullivan, Harpers Magazine, 29 Apr. 2025
Famous athlete revealed as Fuzzy Peas on Masked Singer while Ken Jeong shocks with Lord Farquaad look on wild Shrek Night
With a final dramatic flourish of his cape and a quack, Lucky Duck departed, and it was revealed that Coral would be joining Paparazzo in the final six.
—Lauren Huff, EW.com, 27 Feb. 2025
There couldn’t a worse choice for the CDC at a time when vaccinations are already being discouraged by such quacks as Florida Surgeon General Joseph Ladapo, who also opposes fluoridation.
—Sun Sentinel Editorial Board, Sun Sentinel, 9 Dec. 2024
See All Example Sentences for quack
Recent Examples of Synonyms for quack
Noun
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The president and his allies accused Cook of mortgage fraud.—
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At the same briefing, White House Press Secretary Karoline Leavitt came out swinging at Minnesota Democrats in defense of the ICE agent while touting the Medicaid fraud investigation, which dates back to the Biden administration.—
Noun
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Today, the same fakes can be flagged using AI developed by a company called N2N Services, said Claudia Lee, Golden West College’s vice president of student services.—
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With the score 3-0 at the time, and both teams struggling to protect their quarterbacks, the fake looked like a potential pivot point in a low-scoring game.—
Noun
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Floral bedding is an easy way to optimize maximalism in your bedroom—the block print style of this duvet cover and shams create a welcoming, bohemian vibe, making things feel both bright and relaxed in your space.—
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His 2018 reelection was widely considered a sham because the main opposition parties were banned from participating.—
Noun
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First up was Ben Shapiro, who described Tucker Carlson and others as grifters and charlatans, guilty of misleading their audiences with falsehoods and conspiracy theories.—
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Of course, there is also plenty of Trump flattery along with paeans to Robert F. Kennedy Jr. and his cockamamie make-America-sick-again agenda, as one medical charlatan nods to another.—
Noun
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The Pahlavi pretender himself certainly thinks so.—
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Momentum hardens, vulnerabilities are exposed and the gap between contenders and pretenders is out in the open.—
Noun
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Good afternoon and welcome to Con Con, the convention for swindlers, mountebanks, and the people who love them.—
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Godard might have come across as a species of poseur – a pretentious, quote-spouting mountebank – but his way of seeing was genuinely new.—
Noun
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To tell the truly venomous from the fakers, there are a couple details to help distinguish the two.—
Noun
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Islamic eschatology warned of a deceiver who distorts perception, blurring reality.—
Cite this Entry
“Quack.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/quack. Accessed 13 Jan. 2026.
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