| rickety(adjective, unstable, ill, shaky, insane) |
| untrustworthy(insecure, risky, danger) |
| unwholesome(adjective, offensive, foul, disgusting, rotten) |
| venturesome(adjective, bad, delicate, heavy, uncertain) |
| weighty(adjective, great, severe, important, significant) |
| wild(adjective, strong, moving, violent, unstable) |
| explosive(adjective, unstable, unpredictable, insecure, volatile) |
| exposed(adjective, adverb, bad, open, delicate) |
| calamitous(adjective, injurious, damaging, destructive, arouse bad emotions) |
| catastrophic(injurious, damaging, destructive) |
| crucial(great, severe, important, significant, serious) |
| disadvantageous(adjective, cruel, unkind, distressing, harmful) |
| doubtful(noun, adjective, delicate, uncertain, unstable) |
| ferocious(adjective, strong, hard, severe, rough) |
| frightening(adjective, strong, severe, intense, violent) |
| intense(adjective, strong, severe, harsh, awful) |
| major(adjective, great, tough, severe, unpleasant) |
| murderous(adjective, bad, strong, severe, difficult) |
| noisome(adjective, bad, evil, offensive, unpleasant) |
| polluted(adjective, bad, offensive, foul, revolting) |