1
as in unreasonable
not using or following good reasoning
it's fallacious to say that something must exist because science hasn't proven its nonexistence
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Antonyms & Near Antonyms
2
as in misleading
tending or having power to deceive
consumers who harbor the fallacious belief that credit-card spending will never catch up with them
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Example Sentences
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Recent Examples of fallacious
The same economists who believe in the same fallacious economic notions?
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John Tamny, Forbes.com, 6 July 2025
Lawyers who argued for his ouster on behalf of the National Assembly said the claims by Mr. Yoon were fallacious.
—Choe Sang-Hun, New York Times, 1 Apr. 2025
That will in turn spread on social media, which often plays a disproportional role in boosting these disinformation efforts by providing nearly unlimited platforms for unfiltered content and fallacious and deceptive claims.
—Peter Suciu, Forbes, 23 Dec. 2024
There might be a bigger market for these products, and more consumers might be immune to the fallacious argument that they’re overly processed, if more people were persuaded of the ills of factory farming.
—Kenny Torrella, Vox, 7 Dec. 2018
See All Example Sentences for fallacious
Recent Examples of Synonyms for fallacious
Adjective
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Importantly, the president already has full legal authority to impose tariffs when other nations’ behavior places an unreasonable burden on our economy, including through environmental negligence.—
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The logic was that Spirit had projected the league would grow at a rate that the league itself found unreasonable, and so would not be able to field a team while also paying Rodman.—
Adjective
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Experts immediately pointed out that Hassett had used a misleading method known as a cubic fit to make the mortality data appear less frightening.—
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For its misleading omissions, the Times story deserves a flunking grade.—
Adjective
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Cramer warned that these moments can feel chaotic — even irrational — but are often driven by valuation extremes finally snapping back toward equilibrium.—
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Often, these unjustifiable fears arise simply because people draw irrational conclusions from rational concerns.—
Adjective
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While not everyone gets their wishes, those with no interest in taking on the deceptive — and challenging — role of a Traitor likely won't be chosen.—
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The legal claims included negligence, wrongful death, deceptive trade practices, and product liability.—
Adjective
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Let sound political prescience but take the place of an unreasoning prejudice, and this will be done.—
Adjective
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Plants that provide winter interest, including sedums, goldenrod, blue false indigo, and ornamental grasses.—
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Today’s teenagers can produce a TikTok video in minutes, but how many of them will learn to analyze the president’s false claim that Tylenol causes autism?—
Adjective
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Trump took decisive action Saturday in launching precision military strikes in Venezuela that enabled special forces to seize and detain Maduro, an illegitimate leader despised by his own people.—
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Rubio insisted in interviews that Washington will use control of Venezuela’s oil industry to force policy changes, and called the government currently in place illegitimate.—
Adjective
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In each case, the actual right to your body is deferred to some third party, either the paternalists, the hypothetical children, or unreasoned authority.—
Cite this Entry
“Fallacious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fallacious. Accessed 12 Jan. 2026.
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