| disdainful(adjective, hard, unfeeling, unsympathetic, hardened) |
| forbidding(adjective, hard, tough, harsh, cruel) |
| habituated(adjective, hard, unfeeling, unsympathetic, hardened) |
| hard-as-nails(adjective, hard, unfeeling, unsympathetic, hardened) |
| hard-hearted(adjective, hard, tough, harsh, cruel) |
| hard-nosed(adjective, hard, tough, severe, sharp) |
| hardhearted(adjective, hard, careless, indifferent, cruel) |
| heartless(adjective, hard, careless, indifferent, cruel) |
| impassive(adjective, hard, tough, careless, indifferent) |
| impenitent(adjective, hard, tough, careless, indifferent) |
| impious(adjective, hard, unfeeling, unsympathetic, hardened) |
| inaccessible(adjective, hard, unfeeling, unsympathetic, hardened) |
| indifferent(adjective, hard, careless, cruel, apathetic) |
| indurated(adjective, hard, careless, indifferent, cruel) |
| inhumane(adjective, hard, tough, harsh, cruel) |
| insensate(adjective, hard, careless, indifferent, cruel) |
| insensible(adjective, hard, careless, indifferent, cruel) |
| insensitive(adjective, hard, tough, harsh, careless) |
| insentient(adjective, hard, careless, indifferent, cruel) |
| intolerant(adjective, hard, tough, harsh, cruel) |