| insusceptible(adjective, hard, resist, affect, dead) |
| out of touch(expression, idiom) |
| insensitive(noun, adjective, hard, careless, indifferent) |
| immune(adjective, resist, safe, protected, resistant) |
| impassive(adjective, hard, careless, indifferent, cruel) |
| insensible(adjective, hard, careless, indifferent, cruel) |
| unimpressionable(adjective, hard, careless, indifferent, cruel) |
| impassible(adjective, hard, affect, dead, impassive) |
| impervious(noun, adjective, resist, unresponsive, oblivious) |
| unfeeling(noun, adjective, hard, careless, cold) |
| callous(noun, adjective, hard, indifferent, cruel) |
| heartless(adjective, hard, careless, indifferent, cruel) |
| inflexible(adjective, hard, careless, indifferent, cruel) |
| protected(adjective, safe, unaffected, resistant, invulnerable) |
| soulless(adjective, hard, careless, indifferent, cruel) |
| spiritless(adjective, hard, careless, indifferent, cruel) |
| thick-skinned(noun, adjective, hard, careless, indifferent) |
| anesthetized(adjective, dead, impassive, insensitive, insusceptible) |
| cold-blooded(adjective, hard, careless, indifferent, cruel) |
| dispassionate |