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Definition of irrefutable
irrefutable
/ˌɪr.ɪˈfjuː.t̬ə.bəl/
ir · ref · u · ta · ble
Adverb:irrefutably
irrefutable Lexical Profile
CEFR
C1
Grade
11
Tier
2
Usage
Top 10k
Syllables
5
irrefutable Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adjective
1
Impossible to deny, disprove, or argue against; backed by conclusive proof or logic.
Example
"The research team presented irrefutable evidence that the pollutant was entering the local water supply."
Synonyms
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Word Origin & Etymology
Borrowed in the late 16th century from Late Latin irrefutabilis, formed from the assimilative negative prefix in- ('not') and refutabilis, from refutare ('to drive back, repress, or disprove').
Cite this Entry
Wordmom. (2026). Definition of Irrefutable. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/irrefutable