| unresponsive(adjective, mean, bad, hard, cool) |
| calm(adjective, attitude, care, cold, attention) |
| cold-hearted(adjective, person, hard, tough, severe) |
| uninvolved(adjective, indifferent, uninterested, care, attitude) |
| unsentimental(adjective, attitude, cold, unemotional, calmness) |
| coldhearted(adjective, person, mean, hard, severe) |
| inhuman(adjective, person, mean, bad, hard) |
| passionless(adjective, indifferent, care, attitude, attention) |
| regardless(adjective, careless, cold, indifferent, detached) |
| stolid(adjective, indifferent, unconcerned, passive, listless) |
| unheeding(adjective, cold, forget, inattentive, inexact) |
| unwilling(adjective, characteristic, care, indifferent, attention) |
| neutral(adjective, calm, cool, relaxed, cold) |
| icy(adjective, mean, hard, cool, tough) |
| incurious(adjective, calm, hard, cool, relaxed) |
| merciless(adjective, person, mean, hard, tough) |
| pitiless(adjective, person, hard, tough, severe) |
| unaffectionate(adjective, bad, evil, awful, negative) |
| unobservant(noun, adjective, cold, forget, inattentive) |
| hard-boiled(adjective, bad, hard, careless, cold) |