nepotalyoudaoicibaDictYouDict[nepotal 词源字典]
"Of, relating to, of the nature of, or characteristic of a nephew or nephews", Mid 19th cent.; earliest use found in Edward Bulwer-Lytton (1803–1873), writer and politician. Probably from classical Latin nepōt-, nepōs + -al, although compare nepote.[nepotal etymology, nepotal origin, 英语词源]