| treacherous(adjective, harmful, dangerous, injurious, detrimental) |
| trenchant |
| unclean(adjective, bad, taste, offensive, awful) |
| unhealthful(offensive, foul, disgusting, unhealthy, harmful) |
| unkind(cruel, upsetting) |
| unpalatable(adjective, bad, nasty, heavy, horrible) |
| unpleasant(adjective, bad, horrible, disagreeable, horrid) |
| unsafe(adjective, dangerous, injurious, damaging, destructive) |
| villainous(adjective, taste, awful, terrible, apperance) |
| viperous(adjective, malicious, harmful, venomous) |
| abysmal(adjective, taste, awful, terrible, apperance) |
| accursed(adjective, taste, awful, terrible, apperance) |
| accurst(adjective, taste, awful, terrible, apperance) |
| acidulous |
| acrid |
| acute(adjective, dangerous) |
| alarming(adjective, dangerous) |
| appalling(adjective, taste, awful, terrible, apperance) |
| atrocious(adjective, awful, dirty, gloom, badly) |
| awful(adjective, mean, bad, nasty, offensive) |