early 15c., "of or pertaining to a father," from Old French paternal "of a father" (12c.), from Medieval Latin paternalis, from Latin paternus "of a father, fatherly," from pater (see father (n.)). By c. 1600 as "proper to or characteristic of a father; from 1610s as "inherited from a father."
paternal traits
spent his childhood on the paternal farm
a paternal aunt
patella
paten
patency
patent
paterfamilias
paternal
paternalism
paternity
paternoster
path
-path