| calm(adjective, quiet, cool, tough, rational) |
| lethargic(adjective, calm, dull, slow, indifferent) |
| imperturbable(adjective, calm, quiet, cool, relaxed) |
| detached(adjective, calm, quiet, cool, relaxed) |
| aloof(adjective, calm, cool, indifferent, casual) |
| uninterested(adjective, indifferent, feelings, unconcerned, uncaring) |
| bovine(adjective, stupid, apathetic) |
| dim-witted(adjective, simple, slow, stupid, sluggish) |
| slow-witted(adjective, dull, slow, stupid, impassive) |
| unfeeling(noun, adjective, calm, cool, tough) |
| incurious(adjective, indifferent, feelings, detached, casual) |
| inert(adjective, dull, quiet, moving, flat) |
| insensible(adjective, dull, quiet, cool, flat) |
| passive(adjective, calm, dull, indifferent, stupid) |
| unmoved(adjective, calm, cool, indifferent, blank) |
| insensitive(noun, adjective) |
| blunt(adjective, stupid, apathetic, imbecility folly) |
| dim(adjective, dull, simple, slow, unintelligent) |
| inactive(adjective, dull, quiet, flat, slow) |
| lumpish(adjective, stupid, apathetic) |