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
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Recent Examples of fallacious
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
However, not all slippery slope arguments are fallacious.
—Mark Travers, Forbes.com, 26 Mar. 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
But hard evidence in both our nation’s history and our present shows that this reasoning is fallacious.
—Ana Raquel Minian, TIME, 30 May 2024
See All Example Sentences for fallacious
Choe Sang-Hun, New York Times, 1 Apr. 2025
However, not all slippery slope arguments are fallacious.
—Mark Travers, Forbes.com, 26 Mar. 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
But hard evidence in both our nation’s history and our present shows that this reasoning is fallacious.
—Ana Raquel Minian, TIME, 30 May 2024
See All Example Sentences for fallacious
Recent Examples of Synonyms for fallacious
Adjective
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In a unanimous opinion, the justices said courts can look beyond the exact moment a police officer is using deadly force to determine if the force was unreasonable.—
Maureen Groppe,
USA Today,
16 May 2025
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Given the high degree of regulation and data privacy concerns within our industry, this isn’t an unreasonable question, to say nothing of the cost of bespoke software solutions.—
Tom Hughes,
Forbes.com,
15 May 2025
Adjective
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After a 14-year break, the Final Destination franchise returns with another installment sure to inspire a host of new irrational fears.—
EW Staff,
EW.com,
16 May 2025
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Free agency is in the distant past, the NFL Draft is in the rearview mirror and, barring any major swerves, many fans are piecing team depth charts together with irrational confidence while anxiously waiting for Wednesday’s schedule release.—
Dan Pompei,
New York Times,
12 May 2025
Adjective
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In the 1970s, information about the Tuskegee study – a deceptive and unethical 40-year study of untreated syphilis in Black men – came to light.—
Christine Coughlin,
The Conversation,
9 May 2025
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Anyone wanting to fight such usage would have to rely on deceptive practice laws, trademark and copyright protection, and state-specific laws protecting a person's name, image, and likeness.—
Neil J. Rubenking,
PC Magazine,
2 May 2025
Adjective
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Uncanny valley is a term for a reason: The brain can only take so much false information that’s appears to be real.—
Kate Aurthur,
Variety,
5 May 2025
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Comments Steve Burns understands first-hand the detrimental impact online rumors and false narratives can have on public figures.—
Ryan Coleman,
EW.com,
2 May 2025
Adjective
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Nothing in the court’s opinion, however, required states to create voucher programs, much less implied that reserving public education funds for public schools was illegitimate.—
Derek W. Black,
The Conversation,
6 May 2025
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Peters was found guilty in August on seven counts convicting her for assisting in facilitating unauthorized access to voting equipment after the 2020 election, aiming to bolster Trump’s claim the election results were illegitimate.—
Alex Gangitano,
The Hill,
6 May 2025
Adjective
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Pike’s stairs, however, are an M.C. Esher–esque illogical maze, full of steep drop-offs and impossible turns.—
Rebecca Alter,
Vulture,
29 Apr. 2025
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Instead—and this has been reported throughout the process of people trying to preorder a Nintendo Switch 2—individuals go through a confusing and seemingly illogical experience.—
Callum Booth,
Forbes.com,
24 Apr. 2025
Cite this Entry
“Fallacious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fallacious. Accessed 21 May. 2025.
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