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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We're protected from unreasonable searches and seizures.—
Adeola Adeosun,
MSNBC Newsweek,
9 Sep. 2025 -
This is a crude and unreasonable attempt to make the discussion into an all-or-nothing affair.—
Lance Eliot,
Forbes.com,
7 Sep. 2025
Adjective
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Trump continues to make baseless claims about widespread noncitizen voting, has attempted to change voter registration rules to include proof-of-citizenship requirements, and has directed the Justice Department to prioritize prosecuting noncitizens who register or vote.—
Miles Parks,
NPR,
10 Sep. 2025
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The progressive fear that the Abundance movement wants to take over the Democratic Party isn’t baseless at all — its adherents have plenty of influence in it now.—
David Weigel,
semafor.com,
8 Sep. 2025
Adjective
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Meanwhile, a growing body of research found that police regularly performed inadequate rape investigations, deciding reports were unfounded before interviewing witnesses, collecting evidence or testing DNA.—
Willoughby Mariano,
ProPublica,
11 Sep. 2025
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The classic Stern misdirect briefly confused listeners and leaned into the unfounded rumors that SiriusXM wasn't planning to renew Stern’s current five-year contract, which expires in December.—
Melissa Ruggieri,
USA Today,
9 Sep. 2025
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Cite this Entry
“Foundationless.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/foundationless. Accessed 16 Sep. 2025.
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