as in unreasonable
having no basis in reason or fact
the accusation proved to be unfounded
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Example Sentences
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Recent Examples of unfounded
Writing in The Guardian newspaper on Sunday, Araghchi condemned the European powers' move to trigger a process that could reinstate United Nations sanctions, describing it as legally unfounded and bound to fail.
—
Amir Daftari, MSNBC Newsweek, 8 Sep. 2025
The potential for abuse here, for unfounded and unanswerable accusations, seems obvious.
—Michelle Goldberg, Mercury News, 6 Sep. 2025
Kennedy and others have voiced unfounded claims that thimerosal and other vaccine components contribute to autism.
—Lexi Lonas Cochran, The Hill, 4 Sep. 2025
Soon after the rollout of the COVID-19 vaccines, a veritable flood of misinformation followed—often in the guise of unfounded conspiracy theories featuring prominently on social media.
—Joshua P. Cohen, Forbes.com, 2 Sep. 2025
See All Example Sentences for unfounded
Amir Daftari, MSNBC Newsweek, 8 Sep. 2025
The potential for abuse here, for unfounded and unanswerable accusations, seems obvious.
—Michelle Goldberg, Mercury News, 6 Sep. 2025
Kennedy and others have voiced unfounded claims that thimerosal and other vaccine components contribute to autism.
—Lexi Lonas Cochran, The Hill, 4 Sep. 2025
Soon after the rollout of the COVID-19 vaccines, a veritable flood of misinformation followed—often in the guise of unfounded conspiracy theories featuring prominently on social media.
—Joshua P. Cohen, Forbes.com, 2 Sep. 2025
See All Example Sentences for unfounded
Recent Examples of Synonyms for unfounded
Adjective
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Russia is trying to paint Ukraine as the unreasonable party in negotiations, Ferris said.—
Lauren Kent,
CNN Money,
12 Sep. 2025
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Darryl Morin, national president of Forward Latino, a Latino advocacy group based in Franklin, Wisconsin, said the decision erodes Fourth Amendment protections against unreasonable search and seizure.—
Francesca Pica,
jsonline.com,
9 Sep. 2025
Adjective
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Trump continues to make baseless claims about widespread noncitizen voting, has attempted to change voter registration rules to include proof-of-citizenship requirements, and has directed the Justice Department to prioritize prosecuting noncitizens who register or vote.—
Miles Parks,
NPR,
10 Sep. 2025
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The progressive fear that the Abundance movement wants to take over the Democratic Party isn’t baseless at all — its adherents have plenty of influence in it now.—
David Weigel,
semafor.com,
8 Sep. 2025
Adjective
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The totally groundless firing of Dr. Erika McEntarfer, my successor as Commissioner of Labor Statistics at BLS, sets a dangerous precedent and undermines the statistical mission of the Bureau.—
Anna Commander,
MSNBC Newsweek,
2 Aug. 2025
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Putin talks with Iranian foreign minister Russian President Vladimir Putin on Monday told Iranian Foreign Minister Abbas Araqchi in Moscow that aggression against Iran was groundless.—
Susan Miller,
USA Today,
24 June 2025
Adjective
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Allowing the President to unlawfully remove Governor Cook on unsubstantiated and vague allegations would endanger the stability of our financial system and undermine the rule of law.—
Siladitya Ray,
Forbes.com,
10 Sep. 2025
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But Michael Strain, director of economic policy studies at the American Enterprise Institute, noted that Trump’s promise that strong job growth is ahead contradicts his unsubstantiated claims that recent jobs data was faked to embarrass him.—
Dave Smith,
Fortune,
6 Sep. 2025
Cite this Entry
“Unfounded.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unfounded. Accessed 18 Sep. 2025.
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