Same word as nonliterate:

animal, atavistic, austere, barbarian, barbarous, brutish, childlike, fierce, ignorant, naive, natural, nonliterate, preliterate, raw, rough, rude, rudimentary, savage, simple, uncivilized, uncultivated, uncultured, underdeveloped, undeveloped, undomesticated, unlearned, unrefined, unsophisticated, untamed, untaught, untrained, untutored, vestigial, wild