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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Antonyms & Near Antonyms
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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Rollins said federal authorities have made 900 arrests for SNAP fraud during the last year and recovered $132 million in restitution.—
Bart Jansen,
USA Today,
19 June 2026
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The future involves building robust connectors between merchant systems and UCP, and developing new solutions for agent identity and fraud detection.—
Josipa Majic Predin,
Forbes.com,
19 June 2026
Noun
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Maclean’s work traffics in deep fakes and glitch aesthetics, rainbow cuteness and the tropes of pulp—but these are set against violent dystopias and a world of cruelties borne, especially, by women (see her 2018 video Make Me Up as an example).—
Eugenie Brinkema,
ARTnews.com,
14 June 2026
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Thirty-four years having passed since the last go-round, we are treated to such modern advances as catfishing, drones, deep fakes, social media and pushy true-crime podcasters.—
Robert Lloyd,
Los Angeles Times,
4 June 2026
Noun
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The matching shams have an envelope closure to stay put, and the duvet cover has a button closure with corner ties inside to keep your favorite duvet securely in place all night.—
Caley Sturgill,
Southern Living,
14 June 2026
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The five-piece set includes a quilt and four pillow shams, all made from ultra-soft, skin-friendly microfiber designed for year-round use.—
Better Homes & Gardens,
Better Homes & Gardens,
13 June 2026
Noun
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Others estimate that $500 billion in federal spending is diverted by charlatans each year.—
Las Vegas Review-Journal,
Twin Cities,
7 June 2026
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To this day, a portion of the left-wing Democratic elite views Obama as a charlatan who hoodwinked their voters into supporting him.—
Ben Smith,
semafor.com,
28 Apr. 2026
Noun
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Is the team a contender, a pretender or rebuilding?—
Law Murray,
New York Times,
18 May 2026
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Now, hardship seems to be an end in itself, a battle scar or badge of honor that distinguishes true backpackers from mere pretenders.—
Tim Brinkhof,
Time,
4 May 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 actors are perfectly cast, starting with Marmaï’s likable Antoine, the only player here not being the deceiver.—
Pete Hammond,
Deadline,
12 May 2026
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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
Cite this Entry
“Quack.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/quack. Accessed 22 Jun. 2026.
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