| merciless(adjective, mean, hard, cruel, unfeeling) |
| callous(adjective, mean, hard, severe, attitude) |
| cold-blooded(adjective, hard, attitude, cruel, unfeeling) |
| hard(adjective, mean, severe, attitude, harsh) |
| heartless(adjective, mean, hard, severe, attitude) |
| unfeeling(adjective, mean, hard, severe, attitude) |
| cold-hearted(adjective, hard, attitude, cruel, unfeeling) |
| hard-boiled(adjective, hard, attitude, unfeeling, unsympathetic) |
| hardhearted(adjective, mean, hard, severe, attitude) |
| obdurate(adjective, hard, attitude, cruel, unfeeling) |
| pitiless(adjective, mean, hard, severe, harsh) |
| ruthless(adjective, mean, hard, severe, harsh) |
| coldhearted(adjective, unmoved) |
| hardened(adjective, hard, attitude, cruel, unfeeling) |
| inhuman(adjective, hard, cruel, unfeeling, unsympathetic) |
| insensitive(adjective, hard, cruel, unfeeling, unsympathetic) |
| remorseless |
| stony(adjective, unyielding) |
| stonyhearted(adjective, attitude) |
| unemotional(adjective, hard, unfeeling, unsympathetic, pitiless) |