1
as in delusion
a false idea or belief
the once-common fallacy that girls just weren't any good at math
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
2
as in deception
the quality or state of being false
the fallacy of the notion of spontaneous generation was demonstrated by the Dutch naturalist Leeuwenhoek
Synonyms & Similar Words
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 fallacy
The fallacy of first is demonstrated by the Netscape, Napster, Sony’s Betamax, GM’s EV1 electric vehicle, Kodak’s first digital camera in 1975, and UPS’ launch of an overnight delivery service in 1929 as potent reminders that being first is not the winning formula; being the best is.
—
Jeffrey Sonnenfeld, Fortune, 21 Apr. 2026
This was the fallacy that led to the rise of elegant, beautiful, and compelling scenarios — grand unification, supersymmetry, extra dimensions, and string theory — whose predictions simply don’t appear to match experimental reality in any measurable way.
—Big Think, 1 Apr. 2026
Rose pointed out that our decision-making, especially System 1 decision-making, is affected by cognitive biases and logical fallacies.
—Neil J. Rubenking, PC Magazine, 26 Mar. 2026
The fallacy in that argument might not jump out at everybody.
—Edward Lotterman, Twin Cities, 22 Mar. 2026
See All Example Sentences for fallacy
Jeffrey Sonnenfeld, Fortune, 21 Apr. 2026
This was the fallacy that led to the rise of elegant, beautiful, and compelling scenarios — grand unification, supersymmetry, extra dimensions, and string theory — whose predictions simply don’t appear to match experimental reality in any measurable way.
—Big Think, 1 Apr. 2026
Rose pointed out that our decision-making, especially System 1 decision-making, is affected by cognitive biases and logical fallacies.
—Neil J. Rubenking, PC Magazine, 26 Mar. 2026
The fallacy in that argument might not jump out at everybody.
—Edward Lotterman, Twin Cities, 22 Mar. 2026
See All Example Sentences for fallacy
Recent Examples of Synonyms for fallacy
Noun
-
Instead, every new Drake project is a buffet of humiliation, mortification, and self-serving delusion.—
Jayson Greene,
Pitchfork,
18 May 2026
-
As his daughter Kyoko (Banno) struggles to keep their fractured home together, Shinji drifts further into delusion, finding his sole tether to reality at a bar run by Mari (Ahn).—
Naman Ramachandran,
Variety,
17 May 2026
Noun
-
Widespread deception was rampant, with businesses spending far more on green marketing than on actual sustainability improvements.—
Suvrat Dhanorkar,
The Conversation,
18 May 2026
-
That, along with the angle of his arm—his arm slot, in baseball terms—adds another layer of deception.—
Louisa Thomas,
New Yorker,
17 May 2026
Noun
-
Some believe Benjamin Franklin wanted the wild turkey to be the national bird because the eagle steals food from other birds, but Kochersperger said that’s a myth.—
Sarah Raza,
Chicago Tribune,
15 May 2026
-
Like so many historical myths, this swashbuckling tale of pirates, court accusations, and gossip, which frames the rags-to-riches emergence of this American family, is rife with historical fiction.—
Literary Hub,
Literary Hub,
14 May 2026
Noun
-
Of course, the retort is that this would be irritating and exasperating to be continually deluged with alerts about AI deceptiveness.—
Lance Eliot,
Forbes.com,
24 Aug. 2025
-
Beyond the deceptiveness of the narrow material view, spiritual light and hope are always present to be found and felt.—
Sue Brightman,
Christian Science Monitor,
3 Jan. 2025
Noun
-
The Knights fell behind 3-0 after Canyon’s Mia Saenz hit a two-run home run and added another run on an error.—
Eric Sondheimer,
Los Angeles Times,
15 May 2026
-
Instead, Adames committed an inexcusable baserunning error by forgetting how many outs there were in the seventh inning, allowing Ohtani to complete seven scoreless innings as the Giants’ three-game winning streak was snapped.—
Justice delos Santos,
Mercury News,
14 May 2026
Noun
-
The lobby’s circular floor plan gives the illusion of a lily pad floating atop a koi pond.—
Condé Nast,
Condé Nast Traveler,
20 May 2026
-
Over the course of less than two months, these Islanders would be disarmed by the sun, the machinations of the producers, and the illusion of isolation and being apart from their phones for the first time in their lives.—
Anna Peele,
Vulture,
20 May 2026
Noun
-
There are gross omissions, blatant discrepancies, and outright falsehoods.—
Kelsie Cairns,
FOXNews.com,
14 May 2026
-
Blatant falsehoods are not what Angelenos like to see from law enforcement leaders.—
The Editorial Board,
Daily News,
13 May 2026
Cite this Entry
“Fallacy.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fallacy. Accessed 21 May. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
