| cruel(adjective, appearance, mean, hard, tough) |
| ruthless(adjective, appearance, mean, hard, tough) |
| pitiless(adjective, mean, hard, kind, tough) |
| unmerciful(adjective, mean, hard, kind, tough) |
| brutal(adjective, mean, hard, tough, severe) |
| unfeeling(adjective, mean, hard, severe, evil) |
| heartless(adjective, mean, feeling, hard, tough) |
| savage(adjective, mean, hard, tough, rough) |
| uncompassionate(adjective, person, mean, hard, tough) |
| unkind(adjective, person, mean, hard, tough) |
| harsh(adjective, mean, hard, tough, severe) |
| inhuman(adjective, animal, mean, hard, tough) |
| unsympathetic(adjective, person, mean, hard, tough) |
| callous(adjective, person, mean, hard, tough) |
| hard(adjective, mean, tough, severe, evil) |
| inhumane(adjective, mean, hard, tough, severe) |
| barbarous(adjective, appearance, mean, hard, tough) |
| unforgiving(adjective, person, mean, hard, tough) |
| unrelenting(adjective, appearance, mean, hard, tough) |
| hard-hearted(adjective, mean, hard, tough, severe) |