Synonyms for Hereditary (same or very similar meaning)
WordNet sense 1 (tending to occur among members of a family usually by heredity):
familial, genetic, transmissible, inherited, transmittedWordNet sense 2 (inherited or inheritable by established rules (usually legal rules) of descent):
ancestral, patrimonialWordNet sense 3 (that can be inherited):
heritable, inheritableFrom the ODE community, based on WordNetadd/edit