un·​found·​ed | \ˌən-ˈfau̇n-dəd \

Definition of unfounded 

: lacking a sound basis : groundless, unwarranted an unfounded accusation

Keep scrolling for more

Examples of unfounded in a Sentence

the accusation proved to be unfounded

Recent Examples on the Web

The government has dismissed the BNP’s allegations as unfounded, saying the drives are apolitical and based on intelligence from multiple agencies. Vidhi Doshi, Washington Post, "138 people killed in 2 months in Bangladesh police crackdown on drug dealers," 12 July 2018 Some of the complaints were substantiated, but others were unfounded or inconclusive, Cagle said. NBC News, "Man charged with killing boy, 10, who reportedly came out as gay," 28 June 2018 The unfounded theory goes like this: Facebook records audio over smartphone microphones and then uses voice recognition software to show relevant ads in people's News Feeds. Jessica Guynn, USA TODAY, "Facebook has 'no plans' to listen in on your conversations (for now), but the creepy stories mount," 23 June 2018 In fact, both the substance and the style of the tweets mimicked the kind of unremarkable banter and unfounded innuendo one often sees—and then forgets—on Twitter. Michael Mccann, SI.com, "Could Bryan Colangelo Still Face Legal Consequences After Parting Ways With 76ers?," 7 June 2018 So far, those fears and worries have been largely unfounded. Phillip Morris, cleveland.com, "Priest nearly killed in ambush robbery still bullish on Collinwood: Phillip Morris," 8 Apr. 2018 In response, some fans complained that since Lili doesn't have the same body type as Marilyn, her comparison was unfounded. Suzannah Weiss, Teen Vogue, "Lili Reinhart Made an Important Point About Body Dysmorphia," 4 July 2018 Fears about hooligan violence have proven to be unfounded so far. Brian Straus, SI.com, "The World Cup of Chaos: Looking Back on a Group Stage for the Ages," 29 June 2018 Although fears of violence by far-right hooligans proved mostly unfounded during the World Cup, many activists believe such groups will simply reemerge once the global spotlight dims. Ishaan Tharoor, Washington Post, "Russia’s World Cup dream ends, on and off the field," 9 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unfounded.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of unfounded

1648, in the meaning defined above

Keep scrolling for more

Learn More about unfounded

Dictionary Entries near unfounded








Statistics for unfounded

Last Updated

9 Nov 2018

Look-up Popularity

Time Traveler for unfounded

The first known use of unfounded was in 1648

See more words from the same year

Keep scrolling for more

More Definitions for unfounded



English Language Learners Definition of unfounded

: not based on facts or proof


un·​found·​ed | \ˌən-ˈfau̇n-dəd \

Kids Definition of unfounded

: not based on facts or proof : groundless unfounded suspicions

Keep scrolling for more

Comments on unfounded

What made you want to look up unfounded? Please tell us where you read or heard it (including the quote, if possible).


a trusted follower

Get Word of the Day daily email!

Test Your Vocabulary

Difficult Vocab Quiz

  • the-education-of-achilles-eugne-delacroix
  • Which is a synonym of discomfit?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!