irrevocable
adj.
also irrevokable, late 14c., from Latin irrevocabilis "that cannot be recalled, unalterable," from assimilated form of in- "not, opposite of" (see in-(1)) + revocabilis (see revoke). Related: Irrevocably.
〔蒋〕[ir-不，voo，vok声音，叫喊] 不可挽回的，不可取消的