| unappetizing(adjective, offensive, unpleasant, disgusting, painful) |
| unattractive(adjective, bad, nasty, unpleasant, horrible) |
| uncommon(adjective, extraordinary, strange, exceptional, irregular) |
| uncool(adjective, bad, nasty, unpleasant, horrible) |
| undesirable(adjective, bad, nasty, offensive, disgusting) |
| undisguised(adjective, deliberate, bold, shocking, obvious) |
| unexpected(adjective, extraordinary, strange, exceptional, irregular) |
| unhappy(adjective, bad, nasty, horrible, disagreeable) |
| uninviting(adjective, offensive, unpleasant, disgusting, painful) |
| unlikable(adjective, bad, nasty, offensive, unpleasant) |
| unlovely(adjective, bad, nasty, horrible, disagreeable) |
| unnatural(adjective, extraordinary, strange, exceptional, irregular) |
| unorthodox(adjective, extraordinary, strange, exceptional, irregular) |
| unpalatable(adjective, bad, nasty, offensive, disgusting) |
| unpleasant(adjective, bad, tough, nasty, offensive) |
| unsavory(adjective, offensive, unpleasant, disgusting, painful) |
| unusual(adjective, wild, strange, exceptional, fantastic) |
| vile(adjective, nasty, awful, terrible, vicious) |
| weird(adjective, unusual, wild, strange, exceptional) |
| wicked(adjective, bad, awful, terrible, vicious) |