| malicious(adjective, animal, person, mean, harsh) |
| pessimistic(adjective, person, sad, unhappy, miserable) |
| redoubtable(adjective, awful, terrible, dreadful, ominous) |
| rigorous(adjective, strong, hard, tough, severe) |
| shadowy(adjective, sorrow, depress, sadness, emotion) |
| spiteful(adjective, person, mean, hateful, malicious) |
| staid(adjective, dull, quiet, dark, heavy) |
| stiff-necked(adjective, strong, hard, tough, severe) |
| stringent(adjective, tough, severe, firm, harsh) |
| terrific |
| uncompliant(adjective, resist, determined, resolute, persistent) |
| unpleasant(adjective, mean, hard, tough, severe) |
| unsmiling |
| unsympathetic(adjective, animal, person, mean, tough) |
| acrimonious(adjective, tough, severe, harsh, cruel) |
| banemalenteous(adjective, person, unwarmhearted) |
| beetle-browed(adjective, sorrow, depress, sadness, emotion) |
| bitter(adjective, strong, hard, tough, severe) |
| cat-hearted(adjective, person, unwarmhearted) |
| despairing(adjective, miserable, wretched, sorrowful, dejected) |