paterfamilias (n.)youdaoicibaDictYouDict[paterfamilias 词源字典]
early 15c., from Latin pater familias "master of a house, head of a family," from pater "father" (see father (n.)) + familias, old genitive of familia "family" (see family).[paterfamilias etymology, paterfamilias origin, 英语词源]