subrogation (n.)youdaoicibaDictYouDict[subrogation 词源字典]
early 15c., "irregular or unlawful placement of someone in an office," from Middle French subrogation and directly from Latin subrogationem (nominative subrogatio), noun of action from past participle stem of subrogare (see subrogate).[subrogation etymology, subrogation origin, 英语词源]