Synonyms of unsuspecting

2 Syllables
naive, simple, trusting, trustful, nescient, easy, lamber
3 Syllables
unstudious, innocent, ignorant, undoubting, unjaded, swallowing, dupable, ingenuous, credulous, unwarned, unwitting, unwary, confiding, unconscious, gullible, flatfooted
4 Syllables
unscholarly, uninstructed, exploitive, unaware, unadvised, unsuspicious, exploitable, unskeptical
5 Syllables
unknowledgeable, inexperienced, unintellectual