fallacious

adjective

fə-ˈlā-shəs How to pronounce fallacious (audio)
Definition of fallaciousnext
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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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 fallacious There is a widespread but fallacious perception that India's tariffs are inordinately high. — Mohan Kumar, MSNBC Newsweek, 31 Aug. 2025 The same economists who believe in the same fallacious economic notions? — John Tamny, Forbes.com, 6 July 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
  1. unreasonable
  2. misleading
  3. irrational
  4. deceptive
  5. unreasoning
  6. false
  7. illegitimate
  8. unreasoned
Adjective
  • Which is not entirely unreasonable given this very specific set of circumstances.
    — Brian Grubb, Vulture, 3 Aug. 2026
  • Recalls are issued when vehicle owners, regulators, or manufacturers determine that a potentially faulty component presents an unreasonable safety risk or fails to meet specified standards.
    — Jim Gorzelany, Forbes.com, 31 July 2026
Definition of unreasonable
Adjective
  • Spanish officials have blamed traffickers for spreading similar misleading information, and there is a growing suspicion that Moroccan authorities initially failed to stop the crowds, intentionally allowing the surge to grow.
    — Conor Murray, Forbes.com, 31 July 2026
  • Pruitt’s interest in opera is genuine, but the flourish is misleading.
    — Carson Griffith, New Yorker, 30 July 2026
Definition of misleading
Adjective
  • For all the film focuses on Carlson’s irrational attempts to peg the murder on gay people, the actual gay man Tom disappears from the narrative for long periods of time.
    — Alison Foreman, IndieWire, 31 July 2026
  • Retailers’ reputations as poor environments for technology innovation is not unjustified, but their behavior is not completely irrational either.
    — Richard Kestenbaum, Forbes.com, 23 July 2026
Definition of irrational
Adjective
  • This predominantly includes deceptive measures and signal disruptions as responses to intrusive drones.
    — Zita Ballinger Fletcher, Forbes.com, 30 July 2026
  • Warren also raised concerns about X’s banking partner, Cross River Bank, pointing to prior enforcement actions over deceptive loan practices involving the bank’s fintech partners.
    — Ashley Belanger, ArsTechnica, 29 July 2026
Definition of deceptive
Adjective
  • But in each event—in the living act, the undoubted deed—there, some unknown but still reasoning thing puts forth the mouldings of its features from behind the unreasoning mask.
    — Literary Hub, Literary Hub, 6 July 2026
  • Roosevelt surely understood that nameless, unreasoning, unjustified fear cannot be eradicated.
    — New York Times, New York Times, 9 June 2026
Definition of unreasoning
Adjective
  • Bryan Kohberger, who pleaded guilty to stabbing four University of Idaho students to death and waived his right to appeal, is now seeking post-conviction relief by claiming his plea was false.
    — Chadd Cripe. Produced with AI assistance, Idaho Statesman, 30 July 2026
  • On Friday, Tench was arrested on 99 felony charges, which include 33 counts of bid-rigging, 33 of first-degree forgery and 33 of filing false documents.
    — Caroline Silva, AJC.com, 30 July 2026
Definition of false
Adjective
  • But that’s forcing them to wrestle with the idea that any action taken by a party is illegitimate, anti-democratic rigging — something the other team can use to depress the base.
    — David Weigel, semafor.com, 22 July 2026
  • Signature-matching efforts sometimes disqualify more legitimate than illegitimate ballots.
    — Jeremy Kohler, ProPublica, 15 July 2026
Definition of illegitimate
Adjective
  • In each case, the actual right to your body is deferred to some third party, either the paternalists, the hypothetical children, or unreasoned authority.
    — Kyle Munkittrick, Discover Magazine, 20 June 2011
Definition of unreasoned

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fallacies
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Cite this Entry

“Fallacious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fallacious. Accessed 5 Aug. 2026.

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Nglish: Translation of fallacious for Spanish Speakers

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