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
In calling for legal action against CBS, the president made those unsubstantiated claims again.
—
Matthew Medsger, Boston Herald, 14 Apr. 2025
The company immediately began an investigation into the allegations and within a couple of weeks determined the complaint was unfounded and unsubstantiated and that the employees had not been singled out.
—Tyler Whetstone, USA Today, 1 Apr. 2025
The plans must include specific actions to allow unsubstantiated claims to be dismissed quickly.
—Ellen Mitchell, The Hill, 25 Apr. 2025
Since people have spotted the military flights, some took to online groups and shared unsubstantiated claims about the purpose of the training.
—Kendrick Calfee, Kansas City Star, 9 Apr. 2025
See All Example Sentences for unsubstantiated
Matthew Medsger, Boston Herald, 14 Apr. 2025
The company immediately began an investigation into the allegations and within a couple of weeks determined the complaint was unfounded and unsubstantiated and that the employees had not been singled out.
—Tyler Whetstone, USA Today, 1 Apr. 2025
The plans must include specific actions to allow unsubstantiated claims to be dismissed quickly.
—Ellen Mitchell, The Hill, 25 Apr. 2025
Since people have spotted the military flights, some took to online groups and shared unsubstantiated claims about the purpose of the training.
—Kendrick Calfee, Kansas City Star, 9 Apr. 2025
See All Example Sentences for unsubstantiated
Recent Examples of Synonyms for unsubstantiated
Adjective
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In a unanimous opinion, the justices said courts can look beyond the exact moment a police officer is using deadly force to determine if the force was unreasonable.—
Maureen Groppe,
USA Today,
16 May 2025
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Given the high degree of regulation and data privacy concerns within our industry, this isn’t an unreasonable question, to say nothing of the cost of bespoke software solutions.—
Tom Hughes,
Forbes.com,
15 May 2025
Adjective
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Trump’s order aligned with his unfounded claims that fraud is widespread in U.S. elections and that voting by noncitizen immigrants is a major problem.—
Phil Willon,
Los Angeles Times,
28 Apr. 2025
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Drue Moore’s widow, Kelly, and their two children are now suing Brooks and Robinson, claiming their unfounded accusations of him embezzling Winthrop funds led to Drue’s death by suicide.—
Daniel Libit,
Sportico.com,
26 Mar. 2025
Adjective
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Early in 2022, Zahab and longtime expedition partner Kevin Vallely were stymied while attempting an unsupported crossing of Ellesmere, a 500-mile-long Canadian island in the Arctic Circle (and one of the northernmost land masses on the planet).—
Owen Clarke,
Outside Online,
2 May 2025
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Outside scientists examine submitted studies for biases, errors, and unsupported claims or conclusions, and authors are required to include statements about conflicts of interest—including reasons for even just the appearance of bias in the eyes of others—and to disclose their funding sources.—
Eric Reinhart,
Scientific American,
1 May 2025
Cite this Entry
“Unsubstantiated.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unsubstantiated. Accessed 20 May. 2025.
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