as in unreasonable
having no basis in reason or fact
an unsubstantiated claim that was thrown out of court
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of unsubstantiated
Meanwhile, the industry struggles with financing, regulatory challenges and the specter of illicit markets clinging to high profits and unsubstantiated claims.
—
Jahan Marcu, Rolling Stone, 29 Jan. 2025
In a complaint laden with unsubstantiated accusations, Parker claimed that Hopper’s husband had been having an affair with Sara.
—Ariane Lange, Sacramento Bee, 26 Jan. 2025
The lawsuit alleges that NewsNation did not verify Burgess' statements, amplifying unsubstantiated claims to millions of viewers.
—Raul A. Reyes, Newsweek, 23 Jan. 2025
Many have gone so far in their opposition to make unsubstantiated claims that the law would empower child predators to give genital examinations to young girls.
—Jackson Thompson, Fox News, 22 Jan. 2025
See all Example Sentences for unsubstantiated 
Jahan Marcu, Rolling Stone, 29 Jan. 2025
In a complaint laden with unsubstantiated accusations, Parker claimed that Hopper’s husband had been having an affair with Sara.
—Ariane Lange, Sacramento Bee, 26 Jan. 2025
The lawsuit alleges that NewsNation did not verify Burgess' statements, amplifying unsubstantiated claims to millions of viewers.
—Raul A. Reyes, Newsweek, 23 Jan. 2025
Many have gone so far in their opposition to make unsubstantiated claims that the law would empower child predators to give genital examinations to young girls.
—Jackson Thompson, Fox News, 22 Jan. 2025
See all Example Sentences for unsubstantiated
Recent Examples of Synonyms for unsubstantiated
Adjective
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In response to Kelley calling the union demands unreasonable, Lacey said the president's comments were insulting.—
Fernando Cervantes Jr.,
USA TODAY,
6 Feb. 2025
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The share of frisks and fuller searches complying with the ruling — and the Constitution’s Fourth Amendment guarantee against unreasonable searches and seizures — were lower than the stop numbers.—
New York Daily News Editorial Board,
New York Daily News,
5 Feb. 2025
Adjective
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Nonetheless, unfounded characterizations of transgender people as terrorists, groomers or mentally unwell have accelerated in recent years, as have state and federal policies aimed at restricting trans rights.—
Odette Yousef,
NPR,
6 Feb. 2025
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Kennedy, whose confirmation hearings began Wednesday, could instead be sunk by his controversial opposition to vaccines and other long-standing public health interventions, like water fluoridation, and unfounded claims about COVID-19.—
Amina Brown,
ABC News,
3 Feb. 2025
Adjective
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Now, with the probable confirmation of Robert F. Kennedy Jr. to be secretary of health and human services, some of these unsupported theories may soon have their loudest megaphone ever.—
Monica Potts,
ABC News,
12 Feb. 2025
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Microsoft has quietly deleted its official instructions on how to install Windows 11 on an unsupported Windows 10 machine.—
Michael Kan,
PCMAG,
3 Feb. 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 21 Feb. 2025.
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