as in unreasonable
having no basis in reason or fact
the accusation proved to be unfounded
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Recent Examples of unfounded
But some analysts noted the war was still ongoing, warning that the optimism may be unfounded.
—
ABC News, 14 Apr. 2026
Nonetheless, nasty rumors circulated for a time — most casting unfounded suspicions on Jordan’s family, for little reason beyond their being Indigenous people.
—Dennis Harvey, Variety, 11 Apr. 2026
France previously denounced their detention as unjustified and unfounded.
—Greg Norman-Diamond, FOXNews.com, 7 Apr. 2026
The fear that people might vote twice is unfounded, would be quickly discovered, and thus is non-existent.
—U T Readers, San Diego Union-Tribune, 7 Apr. 2026
See All Example Sentences for unfounded
ABC News, 14 Apr. 2026
Nonetheless, nasty rumors circulated for a time — most casting unfounded suspicions on Jordan’s family, for little reason beyond their being Indigenous people.
—Dennis Harvey, Variety, 11 Apr. 2026
France previously denounced their detention as unjustified and unfounded.
—Greg Norman-Diamond, FOXNews.com, 7 Apr. 2026
The fear that people might vote twice is unfounded, would be quickly discovered, and thus is non-existent.
—U T Readers, San Diego Union-Tribune, 7 Apr. 2026
See All Example Sentences for unfounded
Recent Examples of Synonyms for unfounded
Adjective
-
Indeed, because deportation is not considered a criminal matter, the constitutional provisions protecting those accused and convicted of crimes do not apply, including prohibiting unreasonable searches and seizures, providing a lawyer and requiring a jury trial.—
Erwin Chemerinsky,
Twin Cities,
8 Apr. 2026
-
That has prompted constitutional concerns around the Fourth Amendment, which prevents unreasonable search and seizure.—
Lisa Hagen,
Hartford Courant,
7 Apr. 2026
Adjective
-
Prosecutors looking to strip Eastman of his law license had depicted him as fabricating a baseless theory and making false claims of fraud in hopes of overturning the results of the election.—
ABC News,
ABC News,
15 Apr. 2026
-
Gregg Phillips, a far-right conspiracy theorist who has been previously cited by the president for his baseless claims about fraud in the 2020 presidential election, was tapped to lead FEMA’s Office of Response and Recovery in December 2025.—
Meredith Kile,
PEOPLE,
14 Apr. 2026
Adjective
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The former proved ultimately groundless while the latter came to pass, but not until the market was glutted.—
Michael Lynch,
Forbes.com,
2 Mar. 2026
-
Lawmakers, judges and other public servants, all under groundless presidential attack.—
James D. Zirin,
Washington Post,
3 Feb. 2026
Adjective
-
Multiple women came forward with detailed and serious allegations—including specific claims of drugging, rape, and assault—relatively quickly after initial reports, suggesting a verifiable pattern rather than mere unsubstantiated rumor.—
Los Angeles Times,
Los Angeles Times,
17 Apr. 2026
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The push for peptides (both in injectable and non-injectable forms) has accelerated in recent years as influencers and manufacturers alike tout myriad benefits, many unsubstantiated by research.—
Mary Walrath-Holdridge,
USA Today,
1 Apr. 2026
Cite this Entry
“Unfounded.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unfounded. Accessed 25 Apr. 2026.
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