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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Recent Examples of quack
Medallion’s Derek Lo figures that his software can cut through the system’s redundancies, slashing the time and cost of paperwork designed to prevent quacks from practicing medicine and safeguard patients that’s spiraled into something burdensome.
—
Amy Feldman, Forbes.com, 20 Aug. 2025
Tell that to the kids who have been hospitalized and died from measles, following quack Dr. Bobby’s Rx to avoid the shots.
—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
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
Amy Feldman, Forbes.com, 20 Aug. 2025
Tell that to the kids who have been hospitalized and died from measles, following quack Dr. Bobby’s Rx to avoid the shots.
—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
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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Police have so far arrested 38 people on accusations related to the complex, including manslaughter and fraud.—
Arkansas Online,
Arkansas Online,
20 Mar. 2026
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His two co-defendants have also pleaded guilty to conspiracy to commit bank fraud but have not yet been sentenced.—
Julia Coin,
Charlotte Observer,
20 Mar. 2026
Noun
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The fake was wrong about Karimian, but by the time the Minab strike happened, audiences were primed to believe that a school was a legitimate military target, not the site of a civilian catastrophe.—
Mahsa Alimardani,
The Atlantic,
13 Mar. 2026
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In this clip, Simpson got his head around after the play fake, saw the backside underneath defender run with the through route.—
Ted Nguyen,
New York Times,
13 Mar. 2026
Noun
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Bedsure Best Seller GentleSoft Pintuck Pinch Pleat For a one-and-done bedding upgrade, consider this set that includes sheets, a comforter, pillowcases, and shams, all for just $45.—
Jacqueline Tempera,
Better Homes & Gardens,
16 Mar. 2026
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The results may look deceptively simple—bed sheets, pillow shams, the occasional coverlet—but engrained in those thread counts are hundreds of years spent honing techniques and generations of families honoring lofty traditions.—
Audrey Lee,
Architectural Digest,
13 Mar. 2026
Noun
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Carl Sagan's baloney detection kit taught us how to separate good science from the work of charlatans.—
Big Think,
Big Think,
10 Feb. 2026
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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.—
Jonathan J. Cooper,
Fortune,
19 Dec. 2025
Noun
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These two pretenders reflect an insider debate whose subject is not the existence of the Islamic Republic but the best method of its survival.—
Karim Sadjadpour,
The Atlantic,
4 Mar. 2026
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The Cult of the Beaver has to fend off pretenders.—
AJ Willingham,
AJC.com,
13 Jan. 2026
Noun
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Good afternoon and welcome to Con Con, the convention for swindlers, mountebanks, and the people who love them.—
Henry Alford,
New Yorker,
1 Dec. 2025
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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.—
Peter Rainer,
Christian Science Monitor,
13 Nov. 2025
Noun
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To tell the truly venomous from the fakers, there are a couple details to help distinguish the two.—
Kirsten Fiscus,
Nashville Tennessean,
17 Sep. 2025
Noun
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The film tells the true and twisted tale of a deceiver of land and folk, who, defying her birth as a woman, comported herself as a man and committed many a wicked deed.—
Leo Barraclough,
Variety,
20 Jan. 2026
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Islamic eschatology warned of a deceiver who distorts perception, blurring reality.—
Kaif Shaikh,
Interesting Engineering,
15 Aug. 2025
Cite this Entry
“Quack.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/quack. Accessed 21 Mar. 2026.
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