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
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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
Denialists tend to cherry-pick evidence, set impossible levels of evidence and engage in logical fallacies.
—
H. Christopher Frey, The Conversation, 5 June 2025
The list of projects that fall prey to the sunk cost fallacy are legion.
—Neil Senturia, San Diego Union-Tribune, 16 June 2025
And the fallacy is that trade deficits actually mean anything.
—Isabel Danzis, ABC News, 18 May 2025
To learn more about the facts behind his fallacies, here’s a list of 100 separate false claims Trump has made since his inauguration.
—Jade Walker, CNN Money, 30 Apr. 2025
See All Example Sentences for fallacy
H. Christopher Frey, The Conversation, 5 June 2025
The list of projects that fall prey to the sunk cost fallacy are legion.
—Neil Senturia, San Diego Union-Tribune, 16 June 2025
And the fallacy is that trade deficits actually mean anything.
—Isabel Danzis, ABC News, 18 May 2025
To learn more about the facts behind his fallacies, here’s a list of 100 separate false claims Trump has made since his inauguration.
—Jade Walker, CNN Money, 30 Apr. 2025
See All Example Sentences for fallacy
Recent Examples of Synonyms for fallacy
Noun
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At his trial, Fish's children described a chaotic home life marked by erratic behavior, religious delusions and violence.—
Christina Coulter,
People.com,
12 July 2025
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The private and personalized nature of AI use makes its mental health impact difficult to track, but the evidence of potential harms is mounting, from professional apathy to attachments to new forms of delusion.—
Parmy Olson,
Mercury News,
12 July 2025
Noun
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Last summer, an exponentially growing audience of fans watched her fall head-over-heels for Brit Aaron Evans, only to be left heartbroken over his deception and sobbing to an entirely too appropriate Sabrina Carpenter song chosen by the show's editors.—
KiMi Robinson,
USA Today,
19 July 2025
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Finding The Right Balance The cost of workplace deception is more than just a nasty surprise come employee feedback day.—
Dmitry Malin,
Forbes.com,
15 July 2025
Noun
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In my own writing, the process of myth making fascinates me.—
Irenosen Okojie
July 11,
Literary Hub,
11 July 2025
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Reason 2: The Obsession with Control The second myth plaguing modern business is the assumption that complex systems can be controlled through tighter management processes.—
Tima Bansal,
Forbes.com,
11 July 2025
Noun
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Pilot error caused the crash, according to a final report from the National Transportation Safety Board.—
Perry Vandell,
AZCentral.com,
25 July 2025
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Without a robust knowledge foundation, these early wins can mask serious risks—from compliance breaches to costly decision errors.—
Stéphane Donzé,
Forbes.com,
25 July 2025
Noun
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Call it pixie dust, projection, illusion, artifice — who really cares?—
Teri Sforza,
Oc Register,
11 July 2025
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The illusion is caused by the moon being seen close to the horizon, where trees and buildings give the human brain context.—
Jamie Carter,
Forbes.com,
11 July 2025
Noun
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After Obama had served two terms in the White House, a Morning Consult poll found a third of Republicans still believed that falsehood.—
USA Today,
USA Today,
20 July 2025
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Complex contagion may have taken hold, in a malicious way, and begun spreading falsehood throughout the network at a rapid pace.—
Shaon Lahiri,
The Conversation,
7 July 2025
Cite this Entry
“Fallacy.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fallacy. Accessed 28 Jul. 2025.
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