| severe(adjective, person, mean, hard, tough) |
| unemotional(adjective, calm, dull, mean, hard) |
| apathetic(adjective, calm, dull, mean, hard) |
| uncompassionate(adjective, animal, calm, dull, mean) |
| cold-blooded(adjective, calm, mean, bad, hard) |
| thick-skinned(noun, adjective, mean, hard, cool) |
| tough(noun, adjective, calm, mean, hard) |
| unresponsive(adjective, calm, dull, mean, bad) |
| frigid(adjective, calm, person, dull, mean) |
| hard-boiled(noun, adjective, mean, bad, hard) |
| hardened(noun, adjective, hard, cool, attitude) |
| hardhearted(adjective, mean, hard, severe, attitude) |
| insensate(noun, adjective, bad, hard, careless) |
| obdurate(adjective, mean, hard, cool, tough) |
| dispassionate(adjective, calm, dull, cool, flat) |
| numb(noun, adjective, cold, indifferent, cruel) |
| dead(adjective, cool, cold, indifferent, unfriendly) |
| emotionless(adjective, calm, dull, bad, cool) |
| senseless(adjective, bad, cold, cruel, dead) |
| unconcerned(adjective, calm, mean, hard, cool) |