[ ih-rev-uh-kuh-buhl ]
See synonyms for: irrevocableirrevocabilityirrevocably on

  1. not to be revoked or recalled; unable to be repealed or annulled; unalterable: an irrevocable decree.

Origin of irrevocable

First recorded in 1350–1400; a Middle English word from the Latin word irrevocābilis; see ir-2, revocable

Other words from irrevocable

  • ir·rev·o·ca·bil·i·ty [ih-rev-uh-kuh-bil-i-tee], /ɪˌrɛv ə kəˈbɪl ɪ ti/, ir·rev·o·ca·ble·ness, noun
  • ir·rev·o·ca·bly, adverb
  • non·ir·rev·o·ca·bil·i·ty, noun
  • non·ir·rev·o·ca·ble, adjective
  • non·ir·rev·o·ca·ble·ness, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use irrevocable in a sentence

  • But when she had the permit and her cabin was booked, the irrevocability of her step came to her with full force.

    Saint's Progress | John Galsworthy
  • The question leaped from her, and Garth's answer came with an irrevocability of refusal there was no combating.

    The Hermit of Far End | Margaret Pedler

British Dictionary definitions for irrevocable


/ (ɪˈrɛvəkəbəl) /

  1. not able to be revoked, changed, or undone; unalterable

Derived forms of irrevocable

  • irrevocability or irrevocableness, noun
  • irrevocably, 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