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Word of the Day Tuesday, June 9, 2026

defeater

/dɪˈfiːtər/ noun · British & US
Valid in UKValid in US
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What does defeater mean?

noun

A person or thing that defeats something or someone; a counterargument or counterexample that defeats an argument or theory.

Example

"The new policy was a defeater to the company's previous strategy."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for defeater

Antonyms of defeater

Rhymes with defeater

Etymologically related