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[ih-ref-yuh-tuh-buh l, ir-i-fyoo-tuh-buh l] /ɪˈrɛf yə tə bəl, ˌɪr ɪˈfyu tə bəl/
not capable of being refuted or disproved:
irrefutable logic.
Origin of irrefutable
1610-20; < Late Latin irrefūtābilis. See ir-2, refutable
Related forms
irrefutability, irrefutableness, noun
irrefutably, adverb
indisputable, incontrovertible, undeniable. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for irrefutable
Contemporary Examples
Historical Examples
  • And that cannot be denied; the certificates are there, irrefutable.

  • The scientific mind must have proof, undeniable, irrefutable proof.

    The Golden Woman Ridgwell Cullum
  • To this logic, which was irrefutable, poor Encisco could make no reply.

    South American Fights and Fighters

    Cyrus Townsend Brady
  • The thing existed in his mind, not as a picture, but as a piece of irrefutable evidence.

    Five Tales John Galsworthy
  • Such is the proof we look upon as irrefutable, as complete and perfect.

    Reincarnation Th. Pascal
British Dictionary definitions for irrefutable


/ɪˈrɛfjʊtəbəl; ˌɪrɪˈfjuːtəbəl/
impossible to deny or disprove; incontrovertible
Derived Forms
irrefutability, irrefutableness, noun
irrefutably, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for irrefutable

1610s, from Latin irrefutabilis "irrefutable," from assimilated form of in- "not, opposite of" (see in- (1)) + refutabilis, from refutare (see refute). Related: Irrefutably; irrefutability.

Online Etymology Dictionary, © 2010 Douglas Harper
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