Synonyms of naive

1 Syllable

frank, lamb, fresh, green, plain

2 Syllables

kidder, childish, upfront, stupid, sucker, virgin, patsy, uncool, nescient, franker, up-front, softie, untaught, ungrown, square, candid, harmless, open, frankest, simple, trusting, corn-fed, unspoilt, artless, straight-out, forthright, trustful, callow, wide-eyed, beardless, milk-fed

3 Syllables

guileless, spontaneous, stupidest, innocent, jellybean, plainspoken, dupable, pubescent, jejune, credulous, dewy-eyed, innocuous, unjaded, countrified, unschooled, prentice, fleeceable, thick-headed, unguarded, ignorant, puerile, unworldly, pussycat, gullible, ingenue, unstudious, heart-to-heart, ingenuous, unwiser, natural, unfledged, sincere, confiding, unweaned

4 Syllables

undesigning, unpretentious, unaffected, exploitive, exploitable, dovelike, original, atavistic, paper-tiger, unassumed, unlabored, unscholarly, uninstructed, simple-minded, simpleminded, deceivable, deludable, sophomoric, inproficient, unequipped, juvenile, unsuspecting, babylike, instinctive, uncontrived, impulsive, aboveboard, undisguised, infantine, unpracticed, sophomore, unsuspicious, incapable, uncircumspect

5 Syllables

unknowledgeable, inexperienced, preliterate, nonliterate, unembarrassed, unexperienced, unintellectual, unburdensome, uninitiate, unartificial, unoffensive

6 Syllables

unsophisticated