| brainless(adjective, dull, simple, ability, slow) |
| irrational(adjective, stupid, imbecility folly) |
| lifeless(adjective, living, insensible, things, comatose) |
| brute(adjective, bad, cold, aloof, no feelings) |
| materialistic(feature, person, spirit) |
| mindless(adjective, dull, simple, ability, slow) |
| soulless(adjective, dull, hard, careless, cold) |
| unintelligent(adjective, dull, simple, ability, slow) |
| asleep(adjective, hard, tough, severe, cold) |
| daft(adjective, simple, slow, stupid, boring) |
| deadened(adjective, hard, tough, severe, cold) |
| dumb(adjective, dull, simple, slow, informal) |
| hard(adjective, tough, severe, careless, indifferent) |
| hard-boiled(noun, adjective, bad, hard, careless) |
| hard-hearted(adjective, bad, hard, tough, severe) |
| impassible(adjective, bad, cold, aloof, no feelings) |
| impassive(adjective, hard, careless, cold, indifferent) |
| inept(adjective, imbecility folly) |
| inert(adjective, senseless, lifeless, unconscious, insensible) |
| obdurate(adjective, hard, tough, severe, careless) |