filialyoudaoicibaDictYouDict
filial: see female
familial (adj.)youdaoicibaDictYouDict
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.).
filial (adj.)youdaoicibaDictYouDict
late 14c., from Late Latin filialis "of a son or daughter," from Latin filius "son," filia "daughter," possibly from a suffixed form of PIE root *bheue- "to be, exist, grow" (see be), though *dhe(i)- "to suck, suckle" (see fecund) "is more likely" [Watkins].