as in unreasonable
having no basis in reason or fact
the accusation proved to be unfounded
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Recent Examples of unfounded
An Amazon spokesperson said workers’ fears were unfounded.
—
Greg Bensinger, USA Today, 23 Apr. 2026
Experts say those concerns are not unfounded.
—Larry Seward, Miami Herald, 21 Apr. 2026
Coachella sold out with record spending from fans, and fears that ICE might show up for a prominent Latin headliner proved unfounded.
—Los Angeles Times, 19 Apr. 2026
Valentine did not return phone calls on Thursday, but Lavelle said the board hired an investigator to look into the first complaint, which was determined to be unfounded.
—Andy Sheehan, CBS News, 16 Apr. 2026
See All Example Sentences for unfounded
Greg Bensinger, USA Today, 23 Apr. 2026
Experts say those concerns are not unfounded.
—Larry Seward, Miami Herald, 21 Apr. 2026
Coachella sold out with record spending from fans, and fears that ICE might show up for a prominent Latin headliner proved unfounded.
—Los Angeles Times, 19 Apr. 2026
Valentine did not return phone calls on Thursday, but Lavelle said the board hired an investigator to look into the first complaint, which was determined to be unfounded.
—Andy Sheehan, CBS News, 16 Apr. 2026
See All Example Sentences for unfounded
Recent Examples of Synonyms for unfounded
Adjective
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Sibrian then retaliated against Soto for her claims by reducing her hourly wage, assigning unreasonable workloads and changing her schedule, according to the lawsuit.—
Rachel McRady,
PEOPLE,
1 May 2026
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If these requirements are not met, the search is unreasonable and therefore unlawful, and evidence obtained in that search cannot be used in court, barring a good-faith exception.—
Anne Toomey McKenna,
The Conversation,
29 Apr. 2026
Adjective
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The pet claims — which amplified a baseless online rumour — led to the speech being sampled in songs that received millions of views.—
Adam Leventhal,
New York Times,
28 Apr. 2026
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Jackson’s attorney says those are baseless claims.—
Julia Coin,
Charlotte Observer,
27 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
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Lawmakers, judges and other public servants, all under groundless presidential attack.—
James D. Zirin,
Washington Post,
3 Feb. 2026
Adjective
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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 5 May. 2026.
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