Synonyms of untaught

2 Syllables
naive, unread, nescient, lamber
3 Syllables
unstudious, ignorant, unjaded, know-nothing, benighted, unschooled, unlearned, unmilled, unworked, lowbrowed
4 Syllables
empty-headed, unscholarly, unlettered, untutored, uninstructed, catachrestic, unprocessed, unreflecting, unmatured, intuitive, atavistic
5 Syllables
nonliterate, unactualized, illiterate, unknowledgeable, uneducated, unaccustomed, unintellectual, preliterate, undeveloped