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
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
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
-
David Vander Meer, 49, was being held at Clark County Detention Center on first-degree murder and insurance fraud charges stemming from the death of his wife, Bernadette, two decades ago.
-
According to prosecutors, Eidleh deposited more than $5 million in fraud proceeds, kickbacks and bribes into accounts associated with shell companies in an effort to conceal the source of the money.
Noun
-
The publicly available letter, which was dated June 18, comes as Europe prepares to start implementing more regulations under the AI Act this August, including the transparency obligations requiring companies to disclose deep fakes in audio and visual content.
-
The fakes are similar to the genuine article in appearance, but some show poor craftsmanship.
Noun
-
Each quilt comes with two matching shams to complete the look, and the bedding uses ultrasonic binding instead of stitching so the filling doesn’t shift.
-
The set also comes with two matching pillow shams for a cohesive look.
Noun
-
Others estimate that $500 billion in federal spending is diverted by charlatans each year.
-
To this day, a portion of the left-wing Democratic elite views Obama as a charlatan who hoodwinked their voters into supporting him.
Noun
-
Is the team a contender, a pretender or rebuilding?
-
Now, hardship seems to be an end in itself, a battle scar or badge of honor that distinguishes true backpackers from mere pretenders.
Noun
-
Good afternoon and welcome to Con Con, the convention for swindlers, mountebanks, and the people who love them.
-
Godard might have come across as a species of poseur – a pretentious, quote-spouting mountebank – but his way of seeing was genuinely new.
Noun
-
To tell the truly venomous from the fakers, there are a couple details to help distinguish the two.
Noun
-
The actors are perfectly cast, starting with Marmaï’s likable Antoine, the only player here not being the deceiver.
-
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.
Cite this Entry
“Quack.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/quack. Accessed 30 Jun. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
