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.
The common assumption that, one way or another, the strait will reopen when the crisis ends is unfounded. Robert Kagan, The Atlantic, 10 May 2026 Although an inquiry by the National Oceanic and Atmospheric Administration was closed, stating that the allegation of his removal and transport of the whale head was unfounded, the absence of a detailed public explanation still leaves the ethical questions unresolved. Sam Zeveloff, STAT, 9 May 2026 The vitriol my grandpa endured is deeply unfounded. Chicago Tribune, 8 May 2026 And unfortunately, as is the case with unfounded claims -- the damage starts the moment an accusation is filed, long before any facts are examined. Armando Salguero Outkick, FOXNews.com, 6 May 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 13 May. 2026.

Kids Definition

unfounded

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

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