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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The same could be true of the recent cost estimates, but construction technology has advanced in the past half century, so that lower costs per mile are not unreasonable.—
Michael Lynch,
Forbes.com,
25 July 2025 -
Barbara Attard, a police accountability expert, said meet and confer can last months, but beyond a year is unreasonable.—
Kelly Davis,
San Diego Union-Tribune,
25 July 2025
Adjective
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However, the cruise line says the claims are unfounded as the rule changes in question have been in place since February 2023, and items like clack fans that some users say are banned are just not allowed on indoor dance floors anymore.—
Thomas Westerholm,
MSNBC Newsweek,
17 July 2025
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But research and real-world experience show these fears are unfounded.—
Erika Villegas,
Chicago Tribune,
15 July 2025
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“Foundationless.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/foundationless. Accessed 2 Aug. 2025.
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