| hazardous(adjective, severe, difficult, delicate, awful) |
| risky(noun, adjective, adverb, open, severe) |
| perilous(adjective, adverb, open, severe, difficult) |
| precarious(adjective, adverb, open, difficult, delicate) |
| unsafe(adjective, delicate, false, uncertain, sensitive) |
| harmful(adjective, bad, severe, offensive, awful) |
| critical(adjective, bad, great, heavy, important) |
| scary |
| serious(adjective, help, bad, great, severe) |
| threatening(adjective, strong, hard, tough, severe) |
| chancy(noun, adjective, adverb, open, severe) |
| treacherous(adjective, hard, severe, evil, rough) |
| grave(adjective, help, great, tough, severe) |
| uncertain(noun, adjective, delicate, sensitive, unstable) |
| ticklish(noun, adjective, difficult, delicate, uncertain) |
| insecure(adjective, delicate, false, uncertain, sensitive) |
| poisonous(adjective, bad, offensive, violent, wild) |
| destructive(adjective, bad, harmful, deadly, fatal) |
| menacing(adjective, strong, tough, severe, intense) |
| severe(adjective, help, bad, hard, tough) |