FOUNDATIONLESS Synonyms: 92 Similar and Opposite Words

foundationless

adjective

Definition of foundationless next

as in unreasonable

having no basis in reason or fact a careful investigation proved that the charges were foundationless

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Example Sentences

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Recent Examples of foundationless Buying a foundationless house is not the only real-estate mistake Handler has made. —

Kim Velsey, Curbed, 11 Mar. 2026

Recent Examples of Synonyms for foundationless

Adjective

As in Williams’ case, attorneys argued that a sweep had violated the plaintiffs’ Fourth Amendment rights protecting them from unreasonable search and seizure, as well as their 14th Amendment right to due process.

— Ariane Lange, Sacbee.com, 24 Mar. 2026
Because that is ultimately what The Secret Garden is about—the stubborn, almost unreasonable insistence of living things to grow toward the light.

— Literary Hub, Literary Hub, 23 Mar. 2026