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
Newsweek has created a map showing the states that are considering legislations surrounding this unsubstantiated phenomenon.
—
Kate Plummer, MSNBC Newsweek, 3 June 2025
As the Diddy trial continues to make headlines, the rise of cosplay journalism driven by influencers and content creators sharing unsubstantiated claims is eroding the foundation of trustworthy news.
—Ime Ekpo, Forbes.com, 21 June 2025
In an Instagram post, Northgate said reports of raids at its stores were unsubstantiated.
—Lauren Ng, Los Angeles Times, 17 June 2025
Several outlets then reported on the unsubstantiated rumor.
—Natasha Dye, People.com, 21 May 2025
See All Example Sentences for unsubstantiated
Kate Plummer, MSNBC Newsweek, 3 June 2025
As the Diddy trial continues to make headlines, the rise of cosplay journalism driven by influencers and content creators sharing unsubstantiated claims is eroding the foundation of trustworthy news.
—Ime Ekpo, Forbes.com, 21 June 2025
In an Instagram post, Northgate said reports of raids at its stores were unsubstantiated.
—Lauren Ng, Los Angeles Times, 17 June 2025
Several outlets then reported on the unsubstantiated rumor.
—Natasha Dye, People.com, 21 May 2025
See All Example Sentences for unsubstantiated
Recent Examples of Synonyms for unsubstantiated
Adjective
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In making arrests, the federal government allegedly went against both immigration laws and the Fourth Amendment, which protects people from unreasonable searches and seizures by the government, the plaintiffs argue.—
Laura Rodríguez Presa,
Chicago Tribune,
14 July 2025
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Medical device safety alert: issued in situations where a medical device may present an unreasonable risk of substantial harm.—
Marley Malenfant,
Austin American Statesman,
3 July 2025
Adjective
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The findings show a growing generational divide in workplace confidence, and these fears are not necessarily unfounded.—
Aliss Higham,
MSNBC Newsweek,
6 July 2025
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But any concerns that a lack of American support now will carry over to next year’s FIFA World Cup – in which the U.S. will play its group games in Southern California and Seattle – are probably unfounded.—
Ian Nicholas Quillen,
Forbes.com,
5 July 2025
Adjective
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Kennedy has made unsupported or misleading claims about some of these shots, falsely claiming the measles vaccine leads to deaths every year and leads to illnesses caused by the disease itself.—
Mary Kekatos,
ABC News,
24 June 2025
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Last year the trickle of upgrades moved back and forth, creating some heartburn in the cyber community, as the prospect of a security nightmare with hundreds of millions of Windows users running unsupported PCs started to seem very real.—
Zak Doffman,
Forbes.com,
24 June 2025
Cite this Entry
“Unsubstantiated.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unsubstantiated. Accessed 18 Jul. 2025.
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