as in unreasonable
having no basis in reason or fact
the accusation proved to be unfounded
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Recent Examples of unfounded
However, a new report by the BBC has found that such fears are likely exaggerated or unfounded.
—
Christopher McFadden, Interesting Engineering, 19 Oct. 2025
Conservative news organizations that made such unfounded claims — including Fox News and NewsMax — paid hundreds of millions of dollars in settlements to Dominion Voting Systems.
—Michael Smolens, San Diego Union-Tribune, 19 Oct. 2025
The idea that girls are starting puberty six years earlier is unfounded and nonsensical—this would mean that a typical girl today would start puberty at around six years old (as the average age in the 1950s was around 12).
—Jasmine Laws, MSNBC Newsweek, 17 Oct. 2025
Still, the Epstein saga might have gradually faded from the national consciousness, even in spite of the widespread, unfounded belief that his 2019 suicide in a jail cell while awaiting trial was in fact a murder carried out to prevent him from implicating associates in his crimes.
—Miles Klee, Rolling Stone, 16 Oct. 2025
See All Example Sentences for unfounded
Christopher McFadden, Interesting Engineering, 19 Oct. 2025
Conservative news organizations that made such unfounded claims — including Fox News and NewsMax — paid hundreds of millions of dollars in settlements to Dominion Voting Systems.
—Michael Smolens, San Diego Union-Tribune, 19 Oct. 2025
The idea that girls are starting puberty six years earlier is unfounded and nonsensical—this would mean that a typical girl today would start puberty at around six years old (as the average age in the 1950s was around 12).
—Jasmine Laws, MSNBC Newsweek, 17 Oct. 2025
Still, the Epstein saga might have gradually faded from the national consciousness, even in spite of the widespread, unfounded belief that his 2019 suicide in a jail cell while awaiting trial was in fact a murder carried out to prevent him from implicating associates in his crimes.
—Miles Klee, Rolling Stone, 16 Oct. 2025
See All Example Sentences for unfounded
Recent Examples of Synonyms for unfounded
Adjective
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The letter came in response to a September argument from the CPSC that the launching of a new rule-compliant product undermined the argument that the rule was unreasonable.—
MSNBC Newsweek,
MSNBC Newsweek,
27 Oct. 2025
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This is not unreasonable in the least.—
R. Eric Thomas,
Mercury News,
26 Oct. 2025
Adjective
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Naroditsky, whose cause of death has not been made public, had vigorously denied cheating, and other chess champions agreed the claims were baseless.—
Julia Prodis Sulek,
Mercury News,
23 Oct. 2025
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These baseless rumors of my involvement with Stephen and his death are false.—
Lynsey Eidell,
PEOPLE,
22 Oct. 2025
Adjective
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Earlier this week, Sulton said the new criminal case is groundless and accused prosecutors of bringing additional charges because Spencer rejected a plea deal on the first case.—
Vanessa Swales,
jsonline.com,
17 Oct. 2025
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The most extreme version of this debate over Kirk’s views on Israel emerged with shocking velocity after his death, in the form of groundless claims that he’d been killed by the Israelis.—
Ben Smith,
semafor.com,
15 Sep. 2025
Adjective
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The Amityville Horror, a somewhat underrated flick, is based on the real-life Lutz's unsubstantiated claim that the house was actually haunted.—
Steven Thrash,
Entertainment Weekly,
25 Oct. 2025
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Musk himself has been known to repost unsubstantiated claims, boosting them to his hundreds of millions of followers.—
Hadas Gold,
CNN Money,
7 Oct. 2025
Cite this Entry
“Unfounded.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unfounded. Accessed 3 Nov. 2025.
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