WordNet sense 1 (not established by conditioning or learning):

unconditioned, unlearned

WordNet sense 2 (being talented through inherited qualities):

born, natural

WordNet sense 3 (having the capacity for thought and reason especially to a high degree):

intelligent

WordNet sense 4 (present at birth but not necessarily hereditary; acquired during fetal development):

congenital, inborn

WordNet sense 5 (not inheritable):

nonheritable, noninheritable