| harden(verb, close, set, settle, firm) |
| icy(adjective, mean, hard, cool, tough) |
| iron-hearted(adjective, bad, hard, tough, severe) |
| irreverent(adjective, hard, unfeeling, unsympathetic, prepared) |
| marble(adjective, bad, cold, detached, aloof) |
| remote(adjective, unfriendly, unfeeling, unemotional, numb) |
| reserved(adjective, calm, cool, indifferent, restrained) |
| uncontrite(adjective, impenitent) |
| unforgiving(adjective, person, mean, hard, severe) |
| unyielding(adjective, mean, hard, severe, rough) |
| bestial(adjective, evil, nasty, harsh, cruel) |
| bold(adjective, insolent) |
| brazen(adjective, insolent) |
| brutish(adjective, hard, evil, nasty, harsh) |
| case-hardened(noun, verb, adjective, dull, hard) |
| cauterize |
| contemptuous(adjective, hard, unfeeling, unsympathetic, prepared) |
| distant(adjective, indifferent, detached, unfriendly, apathetic) |
| hostile(adjective, person, hard, tough, evil) |
| impolite(adjective, cruel, vicious, fierce, pitiless) |