| callous(adjective, mean, hard, harsh, cold) |
| heartless(adjective, hard, careless, indifferent, cruel) |
| cruel(adjective, mean, hard, careless, indifferent) |
| unfeeling(adjective, hard, careless, indifferent, cruel) |
| cold(adjective, dull, mean, hard, harsh) |
| dull(adjective, cold, lifeless, inactivity, nonliving) |
| exanimate(adjective, dull, cold, lifeless, inactivity) |
| impassive(adjective, hard, careless, indifferent, cruel) |
| inanimate(adjective, lifeless, alive, organic, nonliving) |
| insensate(adjective, dull, hard, careless, cold) |
| spiritless(adjective, dull, hard, careless, cold) |
| frigid(adjective, mean, hard, harsh, cold) |
| inert(adjective, lifeless, inactivity, nonliving, inorganic) |
| insensible(adjective, mean, hard, harsh, careless) |
| insensitive(adjective, hard, careless, indifferent, cruel) |
| lifeless(adjective, nonliving, inorganic) |
| materialistic(feature, person, spirit) |
| passionless(adjective, insensibility) |
| cold-blooded(adjective, hard, careless, indifferent, cruel) |
| inhuman(adjective, mean, hard, harsh, cold) |