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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Americans for Prosperity sponsored a striking display in the DECC’s Pioneer Hall, demonstrating the scale of the state’s fraud losses with faux $100 bills stacked in volumes that would total $2 billion.—
Jay Gabler,
Twin Cities,
30 May 2026
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The authors then matched high-fraud ZIP codes to areas with fast-appreciating home prices.—
Tristan Bove,
Fortune,
29 May 2026
Noun
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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
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McKenna is extremely shifty with the puck, blending shoulder fakes into his playmaking.—
Scott Wheeler,
New York Times,
3 June 2026
Noun
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The controversial $500,000 portion of PFAS money allocation scheme is a sham and undermines the public trust (Tamarac finds a $500,000 slush fund, editorial, May 21).—
Sun Sentinel Editorial Board,
Sun Sentinel,
28 May 2026
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This quilt and shams set is reversible, lightweight, high-quality, and breathable.—
Tamim Alnuweiri,
InStyle,
28 May 2026
Noun
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Then give the land back, you pompous charlatans.—
Joe Soucheray,
Twin Cities,
2 May 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 10 Jun. 2026.
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