abdication (n.)youdaoicibaDictYouDict[abdication 词源字典]
1550s, "a disowning," from Latin abdicationem (nominative abdicatio) "renunciation, abdication," noun of action from past participle stem of abdicare (see abdicate); sense of "resignation of sovereignty" is from 1680s.[abdication etymology, abdication origin, 英语词源]