| unsusceptible(adjective, hard, resist, affect, dead) |
| immune(adjective, resist, safe, protected, resistant) |
| impassive(adjective, hard, cool, affect, dead) |
| unresponsive(adjective, hard, impassive, insensitive, unsusceptible) |
| insensitive(adjective, hard, affect, dead, impassive) |
| out of touch(expression, idiom) |
| unimpressionable(adjective, hard, affect, dead, insensitive) |
| impassible(adjective, hard, affect, dead, impassive) |
| unfeeling(adjective, hard, cool, dead, blank) |
| heartless(adjective, hard, cool, blank, aloof) |
| impervious(adjective, resist, resistant) |
| resistant(adjective, resist, safe, unaffected, opposing) |
| resistive(adjective, resist, resistant) |
| insensible(adjective, cool, dead, blank, aloof) |
| obtuse(adjective, hard, insensitive, unsusceptible) |
| protected(adjective, safe, unaffected, resistant, invulnerable) |
| coldhearted(adjective, hard, insensitive, unsusceptible) |
| exempt(adjective, safe, unaffected, protected, resistant) |
| immunized |
| incapable |