| unrepenting(adjective, hard, unfeeling, unsympathetic, prepared) |
| unsubmissive(adjective, hard, unfeeling, unsympathetic, prepared) |
| unsusceptible(noun, adjective, hard, unfeeling, unsympathetic) |
| unsympathetic(adjective, hard, unfeeling, hardened, toughened) |
| unyielding(adjective, set, strong, hard, firm) |
| vitrified |
| blind to(expression, adjective, hard, unfeeling, unsympathetic) |
| braced |
| brawny(adjective, strong, hard, solid, stiff) |
| careless(adjective, hard, unfeeling, unsympathetic, hardened) |
| cheered |
| cohesive(adjective, strong, hard, solid, stiff) |
| cold(adjective, hard, unfeeling, unsympathetic, hardened) |
| cold-blooded(adjective, hard, unfeeling, unsympathetic, hardened) |
| conditioned(adjective, strong, hard, solid, stiff) |
| coppered |
| cured |
| cynical(adjective, hard, unfeeling, unsympathetic, hardened) |
| deaf to(expression, adjective, hard, unfeeling, unsympathetic) |
| dense(adjective, strong, hard, solid, stiff) |