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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Officers are able to use loitering laws as general warrants to circumvent individuals’ constitutional right to be protected from unreasonable searches and seizures, Wood said.—
Alex Brizee,
Idaho Statesman,
10 Nov. 2025 -
The class counsel has argued that objectors are raising either points that were already decided, inappropriate for this forum, or unreasonable to address.—
Daniel Libit,
Sportico.com,
5 Nov. 2025
Adjective
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The papers were studying strokes in animals, and researchers not only found duplicate images but also a lack of follow-up research, another red flag pointing to baseless findings.—
Tom Chivers,
semafor.com,
7 Nov. 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
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 13 Nov. 2025.
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