| ignorant(adjective, rude, coarse, vulgar, raw) |
| imponderable(adjective, knowledge, heavenly, subtle, imperceptible) |
| inactive(adjective, dull, quiet, flat, listless) |
| incurious(adjective, cold, indifferent, feelings, dead) |
| intangible(adjective, knowledge, heavenly, indefinite, imperceptible) |
| lackadaisical(adjective, temper, cold, indifferent, negative) |
| lethargic(adjective, cold, indifferent, feelings, dead) |
| obdurate(adjective, strong, hard, tough, severe) |
| pococurante(adjective, temper, cold, negative, dead) |
| sluggish(adjective, dull, quiet, flat, slow) |
| thick-skinned(adjective, hard, tough, severe, careless) |
| anesthetized(adjective, hard, tough, severe, cold) |
| apathetical(adjective, temper, cold, negative, dead) |
| bloodless(adjective, difficult, attitude, feelings, unfeeling) |
| blunt(adjective, insensibility, physical insensibility) |
| deadened(adjective, hard, tough, severe, cold) |
| deaf(adjective, indifferent, unconcerned, unsympathetic, ignorant) |
| dispassionate(adjective, cool, indifferent, blank, aloof) |
| impersonal(adjective, temper, cold, negative, dead) |
| incomprehensible |