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
The nomination to any responsible position of quacks like Robert F. Kennedy Jr. or Florida Surgeon General Joseph Ladapo would put her to that test.
—
Orlando Sentinel and South Florida Sun Sentinel Editorial Boards, Orlando Sentinel, 11 Nov. 2024
Her favorite recording reminded me of a duck’s quack.
—Rivka Galchen, The New Yorker, 14 Oct. 2024
Witness the presidential campaign of anti-vaccine crackpot Robert F. Kennedy Jr. and the dangerous attack on medical science by Florida Gov. Ron DeSantis and his quack henchman, Florida Surgeon General Joseph Ladapo.
—Michael Hiltzik, Los Angeles Times, 30 July 2024
Many in the life-extension movement are quacks or hacks who peddle pills, potions, and false promises; longevity skeptics tend to see the loss of our capacities as something to accept, not avoid.
—Dhruv Khullar, The New Yorker, 15 Apr. 2024
See All Example Sentences for quack
Orlando Sentinel and South Florida Sun Sentinel Editorial Boards, Orlando Sentinel, 11 Nov. 2024
Her favorite recording reminded me of a duck’s quack.
—Rivka Galchen, The New Yorker, 14 Oct. 2024
Witness the presidential campaign of anti-vaccine crackpot Robert F. Kennedy Jr. and the dangerous attack on medical science by Florida Gov. Ron DeSantis and his quack henchman, Florida Surgeon General Joseph Ladapo.
—Michael Hiltzik, Los Angeles Times, 30 July 2024
Many in the life-extension movement are quacks or hacks who peddle pills, potions, and false promises; longevity skeptics tend to see the loss of our capacities as something to accept, not avoid.
—Dhruv Khullar, The New Yorker, 15 Apr. 2024
See All Example Sentences for quack
Recent Examples of Synonyms for quack
Noun
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Holmes was convicted on four counts of fraud after lying to Theranos investors about her blood testing technology's reliability and was later sentenced to 11 years in prison in 2022.—
Madison E. Goldberg,
People.com,
29 Mar. 2025
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But this would come as the result of a cutback in government spending that is currently categorized by Trump Administration officials as either waste, fraud, or non-essential in nature.—
Sal Gilbertie,
Forbes.com,
29 Mar. 2025
Noun
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This is a cruder example of how artificial intelligence is being used to create deep fakes.—
Erik Sherman,
Forbes,
21 Mar. 2025
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As a bonus, this reusable fake is a fun prop to keep around for make-believe health care provider visits.—
Kimberly Stoney,
Parents,
19 Mar. 2025
Noun
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The cotton quilt is lightweight enough for year-round use and includes two matching shams to complete the look.—
Megan Schaltegger,
People.com,
21 Mar. 2025
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The decision to annul November’s election had little precedent and handed a propaganda victory to Moscow, which has long dismissed Western democracy as a sham in which elites fix the results to suppress unorthodox views and guarantee an outcome favorable to the liberal establishment.—
Christian Edwards,
CNN,
10 Mar. 2025
Noun
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The bot will see you now: Therapists in the U.S. are getting ready for a battle with A.I. pretenders.—
Natasha Frost,
New York Times,
25 Feb. 2025
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Without a bit more heart and soul, the spinoff is just a pretender in a nicely tailored suit.—
Kelly Lawler,
USA TODAY,
25 Feb. 2025
Noun
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No, the danger is what those charlatans exploit, namely our vulnerability to the narrative of natural healing, the irresistible allure of conquering cancer with a simple, intuitive approach that lies entirely within our power, no chemo or surgery required.—
Alan Levinovitz,
Washington Examiner - Political News and Conservative Analysis About Congress, the President, and the Federal Government,
28 Feb. 2025
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There was too much history for anyone to dismantle, let alone a charlatan like Hitler.—
Luke Berryman,
New York Daily News,
27 Feb. 2025
Noun
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With tariffs on pharmaceuticals, the mountebank of Mar-A-Lago wants to punish a small democracy of 5.3 million people that for the past 60 years has worked its way into the top table of drug research and production: Ireland.—
Kevin Rennie,
Hartford Courant,
29 Mar. 2025
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Gould observed that Jerry Falwell had taken up the mountebank’s mission of William Jennings Bryan.—
Michael Hiltzik,
Los Angeles Times,
26 July 2024
Noun
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That specific kind of grift is known as an impostor scam.—
Alana Semuels,
TIME,
18 Sep. 2024
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At minimum, the Richards bit — which, admittedly, some liked more than others — rolls out a red carpet for Leon to steal the show as a Jewish-doctor impostor trying to snap Richards into it after his Groats diagnosis.—
Larry Fitzmaurice,
Vulture,
8 Apr. 2024
Cite this Entry
“Quack.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/quack. Accessed 8 Apr. 2025.
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