as in unreasonable
having no basis in reason or fact
an unsubstantiated claim that was thrown out of court
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Example Sentences
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Recent Examples of unsubstantiated
The investigator found that claim, which was based on Fuhrer’s communication patterns with the department head, was unsubstantiated.
—
Jake Goodrick, Sacbee.com, 27 Mar. 2025
Trump has accused Elias, along with others, of being behind a dossier of unsubstantiated allegations about his links to Russia that were investigated by the FBI during his first campaign for president in 2016.
—Jay Weaver, Miami Herald, 25 Mar. 2025
This is being justified with completely unsubstantiated claims that Social Security is riddled with fraud.
—U T Editorial Board, San Diego Union-Tribune, 21 Mar. 2025
Grad didn’t offer evidence of his claim, and the theory remains publicly unsubstantiated.
—Larry Holder, New York Times, 26 Mar. 2025
See All Example Sentences for unsubstantiated
Jake Goodrick, Sacbee.com, 27 Mar. 2025
Trump has accused Elias, along with others, of being behind a dossier of unsubstantiated allegations about his links to Russia that were investigated by the FBI during his first campaign for president in 2016.
—Jay Weaver, Miami Herald, 25 Mar. 2025
This is being justified with completely unsubstantiated claims that Social Security is riddled with fraud.
—U T Editorial Board, San Diego Union-Tribune, 21 Mar. 2025
Grad didn’t offer evidence of his claim, and the theory remains publicly unsubstantiated.
—Larry Holder, New York Times, 26 Mar. 2025
See All Example Sentences for unsubstantiated
Recent Examples of Synonyms for unsubstantiated
Adjective
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The words were harsh but the logic was not unreasonable.—
George Caulkin,
The Athletic,
24 Mar. 2025
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This would not be an unreasonable proposition, considering the U.S. already pledged a security guarantee to Ukraine upon its return of all nuclear warheads to Russia by 1996, based on the Budapest Memorandum on Security Assurances.—
Seung-Whan Choi,
Chicago Tribune,
23 Mar. 2025
Adjective
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The former president was also barred from running for office until 2030 by Brazil’s electoral court, for making unfounded claims that voting machines were rigged.—
Gabriela Sá Pessoa,
Los Angeles Times,
11 Apr. 2025
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The network and Dominion reached a $787 million settlement agreement in the case that arose after Fox News aired unfounded accusations that Dominion helped rig the 2020 election against Mr. Trump.—
Melissa Quinn,
CBS News,
10 Apr. 2025
Adjective
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Although 80% of women are faced with some form of hormonal imbalance, women like my sister often feel unsupported in their wellness journeys.—
Bianca Salonga,
Forbes.com,
14 Apr. 2025
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On March 9, a department insider leaked to Reuters that the CDC planned to study unsupported claims of a link between vaccines and autism.—
Marc Caputo,
Axios,
2 Apr. 2025
Cite this Entry
“Unsubstantiated.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unsubstantiated. Accessed 21 Apr. 2025.
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