as in unreasonable
having no basis in reason or fact
the accusation proved to be unfounded
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Recent Examples of unfounded
Trump has described Haitian migrants as a threat to the American way of life, including spreading a racist and unfounded lie that Haitians were eating household pets in Springfield, Ohio.
—
Alana Wise, NPR, 16 Apr. 2026
In a similar instance of repeating unfounded scientific claims, the president suggested in 2020 that injecting disinfectants could kill the COVID-19 virus.
—Brooke Migdon, PEOPLE, 14 Apr. 2026
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
See All Example Sentences for unfounded
Alana Wise, NPR, 16 Apr. 2026
In a similar instance of repeating unfounded scientific claims, the president suggested in 2020 that injecting disinfectants could kill the COVID-19 virus.
—Brooke Migdon, PEOPLE, 14 Apr. 2026
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
See All Example Sentences for unfounded
Recent Examples of Synonyms for unfounded
Adjective
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Gill's decision came after Scott's lawyer requested to suspend the trial on the grounds that the grandparents had not met the state statute requiring them to prove Scott's decision to keep them from seeing Laila was unreasonable.—
Juliet Pennington,
PEOPLE,
24 Apr. 2026
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Keirans, 59, argued the 144-month prison term was unreasonable and that special conditions of supervised release were improper.—
CBS News,
CBS News,
24 Apr. 2026
Adjective
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After Howard King was replaced for a time by attorney Mark Geragos, Geragos made a new but equally baseless $40 million demand on behalf of the Cascios.—
Cynthia Littleton,
Variety,
24 Apr. 2026
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The petition seeking a special prosecutor is frivolous, contains baseless allegations and gross misrepresentations of the law.—
Sabrina Franza,
CBS News,
24 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 1 May. 2026.
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