as in unreasonable
having no basis in reason or fact
an unsubstantiated claim that was thrown out of court
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Examples Sentences
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Recent Examples of unsubstantiated
In California, a recent three-day operation by U.S. Border Patrol agents in Kern County — done days before Trump even takes office — led to 78 arrests and numerous unsubstantiated rumors of additional immigration raids elsewhere in the state.
—
Rick Hurd, The Mercury News, 20 Jan. 2025
Her announcement concluded weeks of speculation about her health and unsubstantiated rumors related to her absence from public engagements.
—Ty Roush, Forbes, 14 Jan. 2025
Happy Days actor Henry Winkler was one user who shared the unproven theory online, taking to X (formerly Twitter) to blame an unknown arsonist in an unsubstantiated claim.
—Kevin Dolak, The Hollywood Reporter, 9 Jan. 2025
This is based on an unverified, unsubstantiated claim sent from a social media account with a record of making unsubstantiated claims.
—Kevin Lynn, Newsweek, 7 Jan. 2025
See all Example Sentences for unsubstantiated 
Rick Hurd, The Mercury News, 20 Jan. 2025
Her announcement concluded weeks of speculation about her health and unsubstantiated rumors related to her absence from public engagements.
—Ty Roush, Forbes, 14 Jan. 2025
Happy Days actor Henry Winkler was one user who shared the unproven theory online, taking to X (formerly Twitter) to blame an unknown arsonist in an unsubstantiated claim.
—Kevin Dolak, The Hollywood Reporter, 9 Jan. 2025
This is based on an unverified, unsubstantiated claim sent from a social media account with a record of making unsubstantiated claims.
—Kevin Lynn, Newsweek, 7 Jan. 2025
See all Example Sentences for unsubstantiated
Recent Examples of Synonyms for unsubstantiated
Adjective
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In the comments, many people criticized the niece for disregarding her uncle's feelings and making an unreasonable request.—
Erin Clack,
People.com,
14 Jan. 2025
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Most Canadians supported the move and opposed the weekslong blockades, but the Federal Court of Canada ruled last year that the use of the powers was unreasonable.—
Amanda Coletta The Washington Post,
arkansasonline.com,
7 Jan. 2025
Adjective
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Given the fact that better returns did not keep Mauricio Pochettino, Nuno Espirito Santo and Antonio Conte in the job, Postecoglou cannot claim that speculation about his future is unfounded.—
Matt Slater,
The Athletic,
19 Jan. 2025
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China has said such fears are unfounded and has accused the U.S. of blocking some high-end technology exports to stunt its development.—
David Faris,
Newsweek,
18 Jan. 2025
Adjective
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Excess occurs when a strength is unsupported by other necessary behaviors.—
Mary Crossan,
Forbes,
20 Jan. 2025
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Inside the house, they were brought to stand in front of a Saudi man who would adjudicate their case — though Ahmad could still barely stay upright unsupported.—
Alia Malek,
New York Times,
17 Jan. 2025
Articles Related to unsubstantiated
Thesaurus Entries Near unsubstantiated
Cite this Entry
“Unsubstantiated.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unsubstantiated. Accessed 28 Jan. 2025.
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