| unhealthy(adjective, good, mean, evil, clean) |
| unnatural(adjective, regular, artificial) |
| vicious(adjective, wrong, evil, nasty, corrupt) |
| awkward(adjective, tough, difficulty, difficult, harsh) |
| bent(adjective, deformed) |
| captious(adjective, tough, difficult, harsh, irritable) |
| cross-grained |
| crusty(adjective, tough, difficult, harsh, awkward) |
| difficult(adjective, support, tough, attitude, harsh) |
| hard(adjective, mean, tough, cruel, determined) |
| miscreant(adjective, good, mean, evil, clean) |
| naughty(adjective, bad, wicked, misbehaved) |
| nefarious(adjective, mean, bad, evil, low) |
| obstreperous(adjective, tough, grim, problematic, trying) |
| persistent(adjective, tough, firm, determined, unreasonable) |
| restive(adjective, determined, negative, nervous, hostile) |
| sinful(adjective, evil, wicked) |
| snappish(adjective, tough, difficult, harsh, gloomy) |
| splenetic(adjective, mean, tough, harsh, gloomy) |
| sullen(adjective, upset, low, gloomy, miserable) |