| uncool(adjective, kindly, ignorant, naive, unknowing) |
| undiscerning(unconcerned, unfamiliar, uninformed) |
| undisciplined(new, raw, inept, unfamiliar, inexperienced) |
| uneducated(adjective, ignorant, unaware) |
| unfledged(new, raw, inept, unfamiliar, inexperienced) |
| unhurtful(adjective, kindly, ignorant, naive, unknowing) |
| unilluminated |
| uninjurious(adjective, kindly, ignorant, naive, unknowing) |
| unintelligent |
| unmalicious(adjective, kindly, ignorant, naive, unknowing) |
| unobjectionable(adjective, kindly, ignorant, naive, unknowing) |
| unoffensive(adjective, kindly, ignorant, naive, unknowing) |
| unpracticed(adjective, new, raw, inept, unfamiliar) |
| unrecognizing(unconcerned, unfamiliar, uninformed) |
| unripe |
| unskilled(new, raw, inept, unfamiliar, inexperienced) |
| unstudied(adjective, kindly, ignorant, naive, unknowing) |
| unsure |
| unsuspecting(adjective, unconcerned, ignorant, unconscious, heedless) |
| unsuspicious(adjective, kindly, ignorant, naive, unknowing) |