| uncalled-for(wrong, false, awkward, improper, excessive) |
| uncomely(wrong, false, awkward, improper, incorrect) |
| underdeveloped(adjective, inexperienced, young, childish, undeveloped) |
| undeveloped(adjective, inexperienced, young, childish, unformed) |
| unfavourable |
| unhappy(unpleasant, miserable, wretched, adverse, unfortunate) |
| unmeet(dull, wrong, flat, slow, suitable) |
| unpromising(negative, unfavorable, disapproving, ominous, uncomplimentary) |
| unsatisfactory(adjective, inexpedient) |
| abnormal(wrong, false, awkward, unsuitable, unfitting) |
| abortive(adjective, inappropriate) |
| adolescent(inexperienced, young, childish, undeveloped, unformed) |
| advanced |
| afflicted(miserable, wretched, unfortunate, doomed, unsuccessful) |
| anachronistic(adjective, inappropriate) |
| anachronistically |
| arrested |
| at odds(expression, wrong, false, awkward, unsuitable) |
| baby(inexperienced, young, childish, undeveloped, unformed) |
| babyish(inexperienced, young, childish, undeveloped, unformed) |