irrevocable |ˌiˈrevəkəbəl| adjective not able to be changed, reversed, or recovered; final : an irrevocable step. DERIVATIVES irrevocability |iˌrevəkəˈbilitē| noun irrevocably |-blē| adverb
ORIGIN late Middle English : from Old French, or from Latin irrevocabilis, from in- ‘not’ + revocabilis ‘able to be revoked’ (from the verb revocare).
