Synonyms of unsophisticated

1 Syllable
kid, clean, green, pure, plain, raw
2 Syllables
kidder, plebeian, childish, upfront, country, cornball, lamber, georgic, up-front, folksy, corny, lowbrow, crude, rookie, rural, kidstuff, naive, corn-fed, rustic, artless, unread, callow, homey, girlish, wide-eyed, wellmeant, beardless, milk-fed
3 Syllables
guileless, spontaneous, unbidden, unstudied, innocent, jellybean, barbarian, pubescent, authentic, credulous, colonial, bush-league, lowbrowed, genuine, working-class, provincial, unjaded, out-country, unschooled, prentice, homespun, hoydenish, barbarians, childlike, familiar, unworldly, gullible, straightforward, ingenuous, unfledged, innoxious, barbarous, unweaned
4 Syllables
undesigning, unaffected, unrefined, exploitive, agronomic, exploitable, atavistic, unlabored, unassumed, uninvolved, rough-and-ready, wild-and-woolly, juvenile, immature, unskeptical, uncontrived, unlettered, untutored, undisguised, unpracticed, sophomore, uninjurious, unmalicious, unsuspicious
5 Syllables
uncivilized, inexperienced, preliterate, nonliterate, unembarrassed, unexperienced, uninitiate, unpremediated, uncomplicated, unartificial, well-intentioned
6 Syllables
unadulterated
7 Syllables
prerevolutionary