as in unreasonable
having no basis in reason or fact
a careful investigation proved that the charges were foundationless
Synonyms & Similar Words
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Antonyms & Near Antonyms
Example Sentences
Recent Examples of Synonyms for foundationless
Adjective
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Civil Code Section 4740 grandfathers rental prohibitions, while Section 4741 bans rental prohibitions and unreasonable restrictions.—
Kelly G. Richardson,
San Diego Union-Tribune,
4 Nov. 2025 -
But this is perhaps an artificial high tempo, dictated by an unreasonable number of substitutes.—
Michael Cox,
New York Times,
2 Nov. 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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The start of the trial in Paris comes three months after Brigitte and her husband sued right-wing American podcaster Candace Owens for making similar unfounded allegations about Brigitte's gender on a public platform.—
Rachel Raposas,
PEOPLE,
29 Oct. 2025
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The Lone Star State is no stranger to conspiracy theories – from baseless claims that cloud seeding caused deadly floods last July to unfounded fears that a routine military training exercise in 2015 was a secret plot to impose martial law in Texas and confiscate firearms.—
Dalia Faheid,
CNN Money,
27 Oct. 2025
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Cite this Entry
“Foundationless.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/foundationless. Accessed 6 Nov. 2025.
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