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Synonyms

irrefutable

American  
[ih-ref-yuh-tuh-buhl, ir-i-fyoo-tuh-buhl] / ɪˈrɛf yə tə bəl, ˌɪr ɪˈfyu tə bəl /

adjective

  1. not capable of being refuted or disproved.

    irrefutable logic.
    Synonyms:
    undeniable, incontrovertible, indisputable
irrefutable British  
/ ˌɪrɪˈfjuːtəbəl, ɪˈrɛfjʊtəbəl /

adjective

  1. impossible to deny or disprove; incontrovertible

"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

Other Word Forms

  • irrefutability noun
  • irrefutableness noun
  • irrefutably adverb

Etymology

Origin of irrefutable

1610–20; < Late Latin irrefūtābilis. See ir- 2, refutable ( def. )

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Yet the mountain of information regarding the link between repeated helmet-to-helmet hitting and CTE is irrefutable.

From Los Angeles Times • Mar. 4, 2026

His Ghanaian passport was approved following "confirmation of the irrefutable ties of IShowSpeed to Ghana", Foreign Minister Samuel Okudzeto Ablakwa posted on social media.

From BBC • Jan. 28, 2026

What is irrefutable is the Rams are continually deepening their foothold on the Los Angeles market.

From Los Angeles Times • Nov. 24, 2025

Yes, the heart-shaped lips and resting pout do some heavy lifting to pull off the baseball-loving mama’s boy, but Butler’s authenticity is irrefutable.

From Salon • Aug. 29, 2025

I wasn’t leaving that musty old building without irrefutable proof that Sir Fig Newton was off his game.

From "Sir Fig Newton and the Science of Persistence" by Sonja Thomas

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.