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
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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The vast majority of post commenters assured the OP that her feelings are completely valid and that her mother is being unreasonable.—
Toria Sheffield,
People.com,
7 June 2025
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But leading the team to the Finals is not an unreasonable request.—
Troy Renck,
Denver Post,
6 June 2025
Adjective
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More recently, unfounded antagonism against immigrants is being used to sow fear across many Orlando-area communities.—
Orlando Sentinel Editorial Board,
The Orlando Sentinel,
12 June 2025
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Bolsonaro has already been banned by Brazil's top electoral court from running in elections until 2030 over abuse of power while in office and casting unfounded doubts on the country's electronic voting system.—
Arkansas Online,
Arkansas Online,
11 June 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 17 Jun. 2025.
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