| impassive(adjective, calm, dull, quiet, cool) |
| dull(noun, adjective, calm, simple, tough) |
| stoic(adjective, calm, dull, cool, tough) |
| indifferent(adjective, calm, dull, quiet, cool) |
| unemotional(adjective, calm, dull, quiet, cool) |
| apathetic(adjective, calm, dull, quiet, cool) |
| half-assed |
| obtuse(noun, adjective, dull, simple, slow) |
| stupid(adjective, dull, simple, slow, intelligent) |
| phlegmatic(adjective, calm, dull, quiet, cool) |
| slow(adjective, dull, quiet, simple, flat) |
| dispassionate(adjective, calm, quiet, cool, relaxed) |
| cool(adjective, calm, quiet, indifferent, casual) |
| doltish(verb, adjective, dull, simple, slow) |
| dense(adjective, dull, simple, slow, foolish) |
| stoical(adjective, calm, cool, blank, aloof) |
| thick(adjective, dull, simple, slow, foolish) |
| unconcerned(adjective, calm, cool, indifferent, feelings) |
| dumb(adjective, dull, simple, slow, foolish) |
| listless(adjective, calm, dull, quiet, flat) |