| sanguinary(adjective, hard, tough, harsh, cruel) |
| savage(adjective, hard, tough, harsh, cruel) |
| soulless(adjective, hard, careless, indifferent, cruel) |
| sour(adjective, hard, tough, harsh, cruel) |
| spiritless(adjective, hard, careless, indifferent, cruel) |
| stiff(adjective, hard, careless, indifferent, cruel) |
| stony(adjective, hard, careless, indifferent, cruel) |
| thick-skinned(adjective, hard, careless, indifferent, cruel) |
| torpid(adjective, hard, careless, indifferent, cruel) |
| tough(adjective, hard, harsh, careless, indifferent) |
| toughened(adjective, hard, careless, indifferent, cruel) |
| tyrannical(adjective, hard, tough, harsh, cruel) |
| unaffected(adjective, hard, careless, indifferent, cruel) |
| unbending(adjective, hard, careless, indifferent, cruel) |
| uncompassionate(adjective, hard, tough, careless, indifferent) |
| unconcerned(adjective, hard, careless, indifferent, cruel) |
| unconverted |
| unfeeling(adjective, hard, careless, indifferent, cruel) |
| unforgiving(adjective, hard, tough, harsh, cruel) |
| unimpressionable(adjective, hard, careless, indifferent, cruel) |