- The definition of irrevocable is something that cannot be undone or changed.
An example of irrevocable is a contract that, once signed, cannot be cancelled.
Origin: Middle English from Middle French irrévocable from Classical Latin irrevocabilis
Used by arrangement with John Wiley & Sons, Inc.
- ir·revˌo·ca·bilˈi·ty, ir·revˈo·ca·ble·ness noun
- ir·revˈo·ca·bly adverb