| hard(adjective, tough, harsh, cruel, grim) |
| callous(adjective, hard, tough, unfeeling, unsympathetic) |
| hardened(adjective, hard, tough, harsh, cruel) |
| obdurate(adjective, hard, tough, unfeeling, unsympathetic) |
| unrepentant |
| accustomed(adjective, hard, unfeeling, unsympathetic, prepared) |
| avaricious(adjective, hard, tough, harsh, cruel) |
| barbarous(adjective, hard, tough, harsh, cruel) |
| benumbed(adjective, hard, unfeeling, unsympathetic, prepared) |
| bloody(adjective, hard, tough, harsh, cruel) |
| case-hardened(adjective, hard, unfeeling, unsympathetic, prepared) |
| coldhearted(adjective, hard, unfeeling, unsympathetic, prepared) |
| contemptuous(adjective, hard, unfeeling, unsympathetic, prepared) |
| disdainful(adjective, hard, unfeeling, unsympathetic, prepared) |
| fierce(adjective, hard, tough, harsh, cruel) |
| forbidding(adjective, hard, tough, harsh, cruel) |
| grim(adjective, hard, tough, harsh, cruel) |
| habituated(adjective, hard, unfeeling, unsympathetic, prepared) |
| hard-as-nails(adjective, hard, unfeeling, unsympathetic, prepared) |
| hard-bitten(adjective, hard, tough, grim, unfeeling) |