| harsh(adjective, mean, hard, cool, severe) |
| impartial(adjective, indifferent, detached, distant, apathetic) |
| impassible(adjective, dull, bad, evil, temper) |
| non-emotional(adjective, attitude, cold, unemotional, calmness) |
| ruthless(adjective, hard, tough, severe, harsh) |
| temperate(adjective, attitude, cold, unemotional, calmness) |
| thick-skinned(adjective, hard, tough, severe, careless) |
| unexcitable(adjective, attitude, cold, unemotional, calmness) |
| unflappable(adjective, attitude, cold, unemotional, calmness) |
| unloving(adjective, person, hard, feelings, cruel) |
| unperturbed(adjective, attitude, cold, unemotional, calmness) |
| unpitying(adjective, mean, hard, cool, severe) |
| Laodicean(adjective, bad, evil, awful, cold) |
| lacking interest(expression, characteristic, care, attention) |
| obdurate(adjective, mean, hard, cool, tough) |
| stony-hearted(adjective, hard, cold, cruel, unfeeling) |
| stonyhearted(adjective, person, feelings, emotions) |
| unkindly(adjective, dull, bad, evil, cold) |
| adamant(adjective, cold, indifferent, unyielding) |
| atrocious(adjective, bad, evil, awful, negative) |