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.
Mafi, of Garden Grove Unified, suggested that fear isn’t unfounded. Andre Mouchard, Oc Register, 15 Feb. 2026 This is spurious and completely unfounded. Letters To The Editor, The Orlando Sentinel, 14 Feb. 2026 Norristown Area High School was on lockdown for part of Tuesday afternoon following a report of a weapon on campus that turned out to be unfounded, the superintendent said. Laura Fay, CBS News, 10 Feb. 2026 Public health experts also criticized the president for making unfounded claims about highly politicized health issues. Matt Brown, Fortune, 10 Feb. 2026 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 24 Feb. 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

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