as in unreasonable
having no basis in reason or fact
an unsubstantiated claim that was thrown out of court
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Recent Examples of unsubstantiated
Many of the accusations were ruled unsubstantiated, a classification the state uses when there is not enough evidence to support the allegations.
—
Jeff McDonald, Mercury News, 12 May 2025
One Democrat member even made the unsubstantiated argument that laws to keep trans athletes out of girls' sports would result in genital inspections of children.
—Jackson Thompson, FOXNews.com, 22 May 2025
Immigration authorities may reject frivolous or unsubstantiated cases.
—Antonio Maria Delgado, Miami Herald, 19 May 2025
The agency investigated once but found the claims to be unsubstantiated, according to a state child welfare report cited by the outlet.
—Brenton Blanchet, People.com, 9 May 2025
See All Example Sentences for unsubstantiated
Jeff McDonald, Mercury News, 12 May 2025
One Democrat member even made the unsubstantiated argument that laws to keep trans athletes out of girls' sports would result in genital inspections of children.
—Jackson Thompson, FOXNews.com, 22 May 2025
Immigration authorities may reject frivolous or unsubstantiated cases.
—Antonio Maria Delgado, Miami Herald, 19 May 2025
The agency investigated once but found the claims to be unsubstantiated, according to a state child welfare report cited by the outlet.
—Brenton Blanchet, People.com, 9 May 2025
See All Example Sentences for unsubstantiated
Recent Examples of Synonyms for unsubstantiated
Adjective
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At this juncture, a 10-7 regular season record isn’t unreasonable.—
Charley Walters,
Twin Cities,
25 May 2025
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Are my feelings unreasonable? – Mother-of-the-Groom Gloom Dear Mother: Your feelings are completely reasonable.—
R. Eric Thomas,
Mercury News,
23 May 2025
Adjective
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However, kidney and urology experts say this fear is unfounded.—
Caitlin Pagán,
Verywell Health,
30 May 2025
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South Africa has categorically denied the allegations and the country's Ministry of International Relations and Cooperation told its American counterparts earlier this month that the claims were unfounded.—
Sonam Sheth,
MSNBC Newsweek,
21 May 2025
Adjective
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While some grievances – expressed in a mixture of open letters, court filings, social media posts, TV interviews and off-the-cuff remarks – have aligned with the school’s own concerns, the university says others have been trivial and unsupported.—
Andy Rose,
CNN Money,
3 June 2025
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If one person encourages their partner’s adventures but feels unsupported on their own, that gap can undermine or even end a relationship.—
Blair Braverman,
Outside Online,
8 May 2025
Cite this Entry
“Unsubstantiated.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unsubstantiated. Accessed 10 Jun. 2025.
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