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.
Public health experts also criticized the president for making unfounded claims about highly politicized health issues. Arkansas Online, 9 Feb. 2026 Concerns about the validity of the ransom note are not unfounded. Hannah Fry, Los Angeles Times, 9 Feb. 2026 Public health experts also criticized the president for making unfounded claims about highly politicized health issues. Matt Brown, Denver Post, 8 Feb. 2026 After her death, a new maltreatment report involving a surviving sibling was also deemed unfounded, and the child was determined to be safe. Julia Prodis Sulek, Mercury News, 7 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 15 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

Last Updated: - Updated example sentences
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