| detached(adjective, unfeeling, unsympathetic, impassive, unresponsive) |
| dog-eat-dog(adjective, pitiless) |
| implacable(adjective, animal, mean, hard, tough) |
| nasty(adjective, mean, hard, cool, evil) |
| remorseless(adjective, animal, mean, hard, cold) |
| severe(adjective, hard, tough, cold, cruel) |
| uncharitable(adjective, mean, hard, feelings, unsympathetic) |
| uncongenial(adjective, mean, hard, cool, unpleasant) |
| unrelenting(adjective, animal, mean, hard, tough) |
| unstirred(adjective, mean, hard, feelings, unsympathetic) |
| anesthetized(adjective, hard, tough, severe, cold) |
| brutish(adjective, hard, cold, indifferent, unfeeling) |
| emotionless(adjective, calm, dull, flat, detached) |
| fiendish(adjective, animal, mean, cruel, vicious) |
| hostile(adjective, person, feelings, emotions, rocky) |
| inexorable(adjective, mean, hard, tough, harsh) |
| inflexible(adjective, person, mean, hard, careless) |
| nonchalant(adjective, insensitive) |
| numb(adjective, hard, tough, severe, cold) |
| objective(adjective, detached, impassive, unresponsive, insensitive) |