| brutish(adjective, violent, cruel, vicious, fierce) |
| calamitous(adjective, sad, unhappy, awful, terrible) |
| cold-blooded(adjective, person, mean, tough, harsh) |
| demanding(adjective, tough, severe, difficult, harsh) |
| demure(adjective, serious, dejection) |
| difficult(adjective, tough, severe, harsh, unhappy) |
| dingy(adjective, dull, dark, gloomy, miserable) |
| doleful(adjective, dull, blue, sad, unhappy) |
| downbeat(noun, adjective, person, blue, sad) |
| dread |
| exacting(adjective, tough, severe, firm, harsh) |
| firm(adjective, strong, hard, tough, severe) |
| formidable(adjective, appearance, bad, severe, awful) |
| hateful(adjective, animal, person, mean, nasty) |
| heartless(adjective, mean, severe, harsh, violent) |
| horrifying(adjective, awful, terrible, disgusting, shocking) |
| hostile(adjective, tough, severe, harsh, dark) |
| immovable(adjective, strong, hard, tough, determined) |
| incompliant(adjective, resist, determined, resolute, persistent) |
| long-faced(adjective, dull, quiet, severe, sad) |