irrefutable

[ih-ref-yuh-tuh-buhl, ir-i-fyoo-tuh-buhl]
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Origin of irrefutable

1610–20; < Late Latin irrefūtābilis. See ir-2, refutable
Related formsir·ref·u·ta·bil·i·ty, ir·ref·u·ta·ble·ness, nounir·ref·u·ta·bly, adverb

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


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British Dictionary definitions for irrefutably

irrefutable

adjective
  1. impossible to deny or disprove; incontrovertible
Derived Formsirrefutability or irrefutableness, nounirrefutably, 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

Word Origin and History for irrefutably

irrefutable

adj.

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