| sluggish(adjective, dull, quiet, weak, easy) |
| listless(adjective, action, dull, quiet, beat) |
| lethargic(adjective, dull, weak, easy, slow) |
| languorous(adjective, action, dull, beat, weak) |
| inactive(adjective, dull, quiet, weak, easy) |
| inert(adjective, dull, quiet, weak, moving) |
| feeble(adjective, dull, strong, weak, easy) |
| dull(adjective, quiet, weak, flat, weakness) |
| lazy(adjective, dull, weak, easy, slow) |
| torpid(adjective, dull, quiet, weak, easy) |
| indolent(adjective, dull, slow, careless, relaxed) |
| lackadaisical(adjective, action, dull, weak, easy) |
| slow(adjective, calm, dull, quiet, light) |
| slothful(adjective, dull, quiet, flat, low) |
| spiritless(adjective, action, dull, quiet, weak) |
| idle(adjective, dull, careless, indifferent, still) |
| apathetic(adjective, dull, quiet, weak, easy) |
| weak(adjective, feature, state, dull, strong) |
| indifferent(adjective, feature, state, dull, quiet) |
| phlegmatic(adjective, dull, weak, easy, slow) |