familial (adj.)youdaoicibaDictYouDict[familial 词源字典]
1888, "pertaining to the family," from French familial, from Latin familia (see family). Meaning "hereditary" is from 1895; from 1903 as "family-like." Earlier familiar also had been used in the sense "of or pertaining to one's family" (late 14c.).[familial etymology, familial origin, 英语词源]