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
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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In Los Angeles County alone, hundreds of hospice providers have been flagged with indicators of fraud, pointing to a level of activity that is far more systemic than isolated incidents.—
Tom Koutsoumpas,
Oc Register,
24 Apr. 2026
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He has been charged by the Justice Department with unlawful use of confidential government information for personal gain, theft of nonpublic government information, commodities fraud, wire fraud and making an unlawful monetary transaction.—
Hallie Golden,
Fortune,
24 Apr. 2026
Noun
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Its Orbs are meant to divine the real from the fake.—
Will Gottsegen,
The Atlantic,
24 Apr. 2026
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Hackers with your booking data can write convincing fakes that look urgent.—
Kurt Knutsson,
FOXNews.com,
22 Apr. 2026
Noun
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Use the matching shams with the same color as the quilt facing out for a cohesive design, or mix and match the shams and quilt for a layered look with dimension.—
Caley Sturgill,
Better Homes & Gardens,
29 Apr. 2026
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Etched with a cheery blue bouquet pattern on a soft yellow background, the comforter and matching shams give any room a spring makeover.—
Tanya Sharma,
PEOPLE,
26 Apr. 2026
Noun
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The 21st century’s obstacles for young men—as seen in deaths of despair and lagging employment—have been amply publicized both by credible journalists and by charlatans such as Fuentes.—
Spencer Kornhaber,
The Atlantic,
27 Mar. 2026
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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
Noun
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The alliance successfully supported Maria Cristiana, who was acting as regent for Isabella II in Spain and had allied herself with the liberals against the pretender Don Carlos in the First Carlist War (1833–39).—
Encyclopedia Britannica,
Encyclopedia Britannica,
2 Apr. 2026
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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
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 1 May. 2026.
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