| foul(adjective, bad, offensive, violent, wild) |
| hurtful(adjective, bad, offensive, cruel, foul) |
| impending(adjective, critical, forbidding, menacing, hazardous) |
| malignant(adjective, bad, heavy, treacherous, unsafe) |
| mischievous(adjective, offensive, cruel, foul, disgusting) |
| not good |
| terrible(adjective, bad, strong, hard, severe) |
| venomous(adjective, bad, strong, severe, evil) |
| difficult(noun, adjective, hard, tough, severe) |
| adventurous(adjective, bad, heavy, bold, brave) |
| adverse(adjective, distressing, harmful, injurious, damaging) |
| formidable(adjective, hard, tough, severe, evil) |
| insidious(adjective, tricky, sneaky) |
| jeopardous(adjective, bad, delicate, uncertain, sensitive) |
| reckless(adjective, anxious, bold, worried, brave) |
| toxic(adjective, harmful, injurious, damaging, fatal) |
| unreliable(adjective, delicate, false, uncertain, unstable) |
| unsound(adjective, severe, delicate, awful, terrible) |
| unsure(noun, adjective, delicate, uncertain, unstable) |
| brave |