debunked; debunking; debunks
Synonyms of debunk

transitive verb

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

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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.
So all of that essentially debunks the idea Buffett is trying to rush to beat a tax change. Sydney Lake, Fortune, 30 July 2026 While the legal case centered on millions of dollars stolen from Ohtani's accounts, Mizuhara's initial confession details his perspective and some notable, later debunked, claims. Peter Chawaga, Forbes.com, 29 July 2026 Researchers found genetic traces of Plasmodium falciparum, the parasite responsible for the deadliest form of malaria — effectively debunking the longstanding poisoning theory. Andrea Margolis, FOXNews.com, 28 July 2026 Trump has long denied his loss to Biden, though his claims have been repeatedly debunked. Rebecca Schneid, Time, 22 July 2026 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

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Cite this Entry

“Debunk.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/debunk. Accessed 4 Aug. 2026.

Kids Definition

: to expose the falseness in
debunk popular myths
debunker noun

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