debunk

verb

de·​bunk (ˌ)dē-ˈbəŋk How to pronounce debunk (audio)
debunked; debunking; debunks

transitive verb

: to expose the sham (see sham entry 1 sense 2) or falseness of
debunk a legend
debunker noun

Did you know?

To debunk something is to take the bunk out of it—that bunk being “nonsense.” (Bunk is short for the synonymous bunkum, which has political origins.) Debunk has been in use since at least the 1920s, and it contrasts with synonyms like disprove and rebut by suggesting that something is not merely untrue but is also a sham—a trick meant to deceive. One can simply disprove a myth, but if it is debunked, the implication is that the myth was a grossly exaggerated or foolish claim.

Examples of debunk in a Sentence

The article debunks the notion that life exists on Mars. The results of the study debunk his theory.
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.
Karen Read’s defense saved her strongest witness for last, experts tell Fox News Digital, bringing in Dr. Andrew Rentschler to try to debunk the prosecution’s claims about how her boyfriend, Boston cop John O’Keefe, died. Michael Ruiz, FOXNews.com, 12 June 2025 Advertisement Grok debunked both Cruz’s post and the brick post. Andrew R. Chow, Time, 12 June 2025 Kennedy, who rose to prominence as a high-profile figure in the anti-vaccine movement, has made a variety of specious and debunked claims about vaccine harms. Erika Edwards, NBC news, 9 June 2025 The proclamation released Wednesday also says Haitian immigrants pose a security risk, echoing Trump's years-long claims linking immigrants with crime and criminal activity, despite consistent independent research that debunks the rhetoric. Kathryn Palmer, USA Today, 6 June 2025 See All Example Sentences for debunk

Word History

First Known Use

1923, in the meaning defined above

Time Traveler
The first known use of debunk was in 1923

Browse Nearby Words

Podcast

Cite this Entry

“Debunk.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/debunk. Accessed 16 Jun. 2025.

Kids Definition

debunk

verb
de·​bunk (ˈ)dē-ˈbəŋk How to pronounce debunk (audio)
: to expose the falseness in
debunk popular myths
debunker noun

More from Merriam-Webster on debunk

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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