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
Synonyms & Similar Words
Relevance
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
Synonyms & Similar Words
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
The same economists who believe in the same fallacious economic notions?
—
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
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
-
Republicans argue that Democrats are making unreasonable demands on a stopgap bill that historically has served as a narrow, short-term bridge.—
Nik Popli,
Time,
29 Sep. 2025
-
Vice President Vance, meanwhile, accused Democrats of making unreasonable demands.—
The Hill staff,
The Hill,
29 Sep. 2025
Adjective
-
To be fair, that number is slightly misleading.—
Shreyas Laddha,
Kansas City Star,
30 Sep. 2025
-
But the content, murky and misleading, is designed to trick Californians into voting for a power grab.—
Laura Koval,
San Diego Union-Tribune,
29 Sep. 2025
Adjective
-
Jim Edwards InvestingMarkets Back in the ’90s a Fed chief warned about ‘irrational exuberance’ in the markets.—
Geoff Colvin,
Fortune,
30 Sep. 2025
-
Those poor scientists – their federal funding has been taken away, their research programs scrapped, and their rigorous scientific findings ignored in favor of one man’s irrational, uninformed opinion.—
Rafael Perez,
Oc Register,
25 Sep. 2025
Adjective
-
Specifically, the four customers argued that Hershey's violated Florida Deceptive And Unfair Trade Practices Act, which is designed to protect Floridians from unfair competition, deceptive acts and unethical practices.—
Greta Cross,
USA Today,
26 Sep. 2025
-
In recent years, users have increasingly been taking to court to challenge allegedly deceptive practices by Amazon.—
Winston Cho,
HollywoodReporter,
25 Sep. 2025
Adjective
-
Let sound political prescience but take the place of an unreasoning prejudice, and this will be done.—
Frederick Douglass,
The Atlantic,
16 Aug. 2017
Adjective
-
Evaluating defamation claims where the report contains demonstrably false factual assertions.—
Tim Reynolds,
Fortune,
3 Oct. 2025
-
However, as several independent experts interviewed by NPR note, that claim is false.—
Scott Neuman,
NPR,
3 Oct. 2025
Adjective
-
Also endangering the family name and business is a crooked deal made by Byron Hedges (Jack Gleeson), an illegitimate cousin helping Guinness expand into America, that promises 15% of all American profits to the Fenian Brotherhood.—
Lynsey Eidell,
PEOPLE,
27 Sep. 2025
-
The play’s serious depiction of class politics and illegitimate birth were considered shocking by contemporary audiences.—
Emily Zarevich,
JSTOR Daily,
11 Sep. 2025
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
Cite this Entry
“Fallacious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fallacious. Accessed 7 Oct. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share