| apathetic(adjective, hard, careless, indifferent, cruel) |
| arctic |
| asleep(adjective, dead, insensitive, insusceptible) |
| autistic |
| benumbed(adjective, hard, dead, unfeeling, unsympathetic) |
| blah(adjective, detached, impassive, unresponsive, laid-back) |
| blind to(verb, expression, adjective, phrasal verb, hard) |
| bloodless(adjective, hard, insensitive, unsusceptible) |
| blunt |
| careless(adjective, hard, indifferent, cruel, apathetic) |
| case-hardened(adjective, hard, careless, indifferent, cruel) |
| catatonic |
| chilly |
| closed |
| cold-hearted(adjective, unfeeling, unsympathetic, uncaring, insensitive) |
| composed(adjective, detached, impassive, unresponsive, dispassionate) |
| deadened(adjective, dead, insensitive, insusceptible) |
| deadpan(adjective, detached, impassive, unresponsive, laid-back) |
| deaf to(verb, expression, adjective, phrasal verb, hard) |
| detached(adjective, impassive, unresponsive, dispassionate, undemonstrative) |