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
Russia’s unsubstantiated claims that NATO is plotting armed provocations against Transnistria could be a pretext for Moscow’s meddling in Moldova, raising concerns about further military aggression in the region.
—
Brendan Cole, MSNBC Newsweek, 25 Sep. 2025
Their reporting is full of unsubstantiated claims and clearly aims at destroying the agency which, at its heart, has provi[ded] education and health care in place where no one else actually wants to work with a group of people that is one of the most vulnerable in the region.
—Benjamin Weinthal, FOXNews.com, 19 Sep. 2025
These are unsubstantiated allegations.
—Sam Gillette, PEOPLE, 19 Sep. 2025
Andrew Caballero-Reynolds / AFP via Getty Images Yet, that has not prevented people from calling for justice for Reed on social media and circulating unsubstantiated allegations regarding his death.
—Daniella Silva, NBC news, 16 Sep. 2025
See All Example Sentences for unsubstantiated
Brendan Cole, MSNBC Newsweek, 25 Sep. 2025
Their reporting is full of unsubstantiated claims and clearly aims at destroying the agency which, at its heart, has provi[ded] education and health care in place where no one else actually wants to work with a group of people that is one of the most vulnerable in the region.
—Benjamin Weinthal, FOXNews.com, 19 Sep. 2025
These are unsubstantiated allegations.
—Sam Gillette, PEOPLE, 19 Sep. 2025
Andrew Caballero-Reynolds / AFP via Getty Images Yet, that has not prevented people from calling for justice for Reed on social media and circulating unsubstantiated allegations regarding his death.
—Daniella Silva, NBC news, 16 Sep. 2025
See All Example Sentences for unsubstantiated
Recent Examples of Synonyms for unsubstantiated
Adjective
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Civil Code Section 4740 grandfathers rental prohibitions, while Section 4741 bans rental prohibitions and unreasonable restrictions.—
Kelly G. Richardson,
San Diego Union-Tribune,
4 Nov. 2025
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But this is perhaps an artificial high tempo, dictated by an unreasonable number of substitutes.—
Michael Cox,
New York Times,
2 Nov. 2025
Adjective
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The start of the trial in Paris comes three months after Brigitte and her husband sued right-wing American podcaster Candace Owens for making similar unfounded allegations about Brigitte's gender on a public platform.—
Rachel Raposas,
PEOPLE,
29 Oct. 2025
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The Lone Star State is no stranger to conspiracy theories – from baseless claims that cloud seeding caused deadly floods last July to unfounded fears that a routine military training exercise in 2015 was a secret plot to impose martial law in Texas and confiscate firearms.—
Dalia Faheid,
CNN Money,
27 Oct. 2025
Adjective
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Naroditsky, whose cause of death has not been made public, had vigorously denied cheating, and other chess champions agreed the claims were baseless.—
Julia Prodis Sulek,
Mercury News,
23 Oct. 2025
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These baseless rumors of my involvement with Stephen and his death are false.—
Lynsey Eidell,
PEOPLE,
22 Oct. 2025
Adjective
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Research reveals that 43% of young professionals feel isolated or unsupported in figuring out their career paths.—
Allison Danielsen,
Fortune,
26 Oct. 2025
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The state treasurer and the fund’s chief investment officer said in 2014 that the resulting report contained multiple inaccuracies and unsupported allegations.—
William Melhado,
Sacbee.com,
21 Oct. 2025
Cite this Entry
“Unsubstantiated.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unsubstantiated. Accessed 8 Nov. 2025.
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