| comatose(adjective, senseless, numb, insensitive, unconscious) |
| dog-eat-dog(adjective, mean, hard, severe, harsh) |
| fiendish(adjective, animal, mean, cruel, vicious) |
| fierce(adjective, animal, mean, severe, evil) |
| imperceptive(adjective, hard, indifferent, unkind, unresponsive) |
| incompatible(adjective, severe, bleak, stark, austere) |
| inexorable(adjective, mean, hard, severe, evil) |
| inflexible(adjective, mean, hard, tough, severe) |
| lifeless(adjective, calm, dull, cool, tough) |
| mechanical(adjective, automatic, done, powered, motorized) |
| numbed(adjective, numb, insensitive, unconscious, inert) |
| remote(adjective, cool, detached, unfriendly, blank) |
| reserved(adjective, cool, detached, unfriendly, blank) |
| rocky(pebbly, flinty) |
| spiteful(adjective, mean, evil, nasty, harsh) |
| strict(adjective, tough, severe, harsh, cruel) |
| unaffected(adjective, hard, tough, careless, cold) |
| unamiable(adjective, cruel, unsympathetic, numb, pitiless) |
| uncongenial(adjective, mean, hard, cool, unpleasant) |
| uncordial(adjective, cruel, unsympathetic, numb, pitiless) |