irreparable (adj.)youdaoicibaDictYouDict[irreparable 词源字典]
early 15c., from Old French irréparable (12c.), from Latin irreparabilis "irreparable, irrecoverable," from assimilated form of in- "not, opposite of" (see in- (1)) + reparabilis "that can be repaired" (see repair).[irreparable etymology, irreparable origin, 英语词源]