unfounded

adjective

un·​found·​ed ˌən-ˈfau̇n-dəd How to pronounce unfounded (audio)
Synonyms of unfoundednext
: lacking a sound basis : groundless, unwarranted
an unfounded accusation

Examples of unfounded in a Sentence

the accusation proved to be unfounded
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
This homeowner's unfounded accusation that our office violated this obligation is untrue and personally offensive. Olivia Young, CBS News, 2 Jan. 2026 While there has been talk of a WNBA lockout, that appears to be unfounded and a reflection of confusion in labor law terms. Michael McCann, Sportico.com, 29 Dec. 2025 Kennedy’s nomination faced fierce resistance from many in the scientific community over his promotion of unfounded claims about vaccines causing autism and antidepressants being linked to school shootings. Swapna Venugopal Ramaswamy, USA Today, 28 Dec. 2025 Sharon denied the claim soon after, and experts agreed that Bertolotti's accusations are likely unfounded and false. Jessica Sager, PEOPLE, 20 Dec. 2025 See All Example Sentences for unfounded

Word History

First Known Use

1648, in the meaning defined above

Time Traveler
The first known use of unfounded was in 1648

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Cite this Entry

“Unfounded.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unfounded. Accessed 9 Jan. 2026.

Kids Definition

unfounded

adjective
un·​found·​ed ˌən-ˈfau̇n-dəd How to pronounce unfounded (audio)
ˈən-
: lacking a sound base : groundless
unfounded suspicions

More from Merriam-Webster on unfounded

Last Updated: - Updated example sentences
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