1
as in delusion
a false idea or belief
the once-common fallacy that girls just weren't any good at math
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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
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of fallacy
This mindset, however, can also foster a sunk cost fallacy.
—
Kumar Rakesh Ranjan, The Conversation, 27 Apr. 2026
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
See All Example Sentences for fallacy
Kumar Rakesh Ranjan, The Conversation, 27 Apr. 2026
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
See All Example Sentences for fallacy
Recent Examples of Synonyms for fallacy
Noun
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Next episode is the series finale, and Euphoria might finally deliver Rue’s redemption, or expose her messianic ambitions as a tragic delusion.—
Dani Di Placido,
Forbes.com,
25 May 2026
-
One of the ways inflation can damage the economy is by prompting politicians to buy into economic delusions in response.—
Editorial Board,
Washington Post,
24 May 2026
Noun
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Artificial intelligence is accelerating the problem by making deception faster, cheaper, and more scalable.—
Richard Torrenzano,
Fortune,
26 May 2026
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Requiring multi‑person approval based on the type and impact of the request limits what deception can achieve under pressure.—
Steve Piper,
Forbes.com,
26 May 2026
Noun
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Platforms delegate the illusion of control and trade on a libertarian myth to obscure the autocratic reality.—
Literary Hub,
Literary Hub,
28 May 2026
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The genus name Kank honors an ancient myth of the indigenous Aonikenk (Tehuelche) people.—
Mrigakshi Dixit,
Interesting Engineering,
28 May 2026
Noun
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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
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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
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Meanwhile, Avila-Siqueiros was silencing the Warner bats, allowing just four walks and an error in the first five innings.—
Kevin J. Farmer,
San Diego Union-Tribune,
29 May 2026
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Among frequent issues cited in the adverse event reports were administration of an extra or incorrect dose, issues with communication about a product, and prescribing errors.—
Maia Rosenfeld,
NBC news,
29 May 2026
Noun
-
Platforms delegate the illusion of control and trade on a libertarian myth to obscure the autocratic reality.—
Literary Hub,
Literary Hub,
28 May 2026
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The modern estate is being asked to function simultaneously as residence, wellness retreat, office, sports facility and family compound, all while preserving the illusion that none of it requires management at all.—
Kate Hardcastle,
Forbes.com,
27 May 2026
Noun
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Ace Reputation’s models are trained not just to recognize explicit falsehoods, but to identify subtler distortions - context shifts, narrative framing, and the early signals of viral propagation, Gaurav claims.—
Wyles Daniel
May 19,
Miami Herald,
19 May 2026
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There are gross omissions, blatant discrepancies, and outright falsehoods.—
Kelsie Cairns,
FOXNews.com,
14 May 2026
Cite this Entry
“Fallacy.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fallacy. Accessed 30 May. 2026.
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