| sluggish(adjective, action, dull, quiet, weak) |
| inactive(adjective, action, calm, dull, quiet) |
| lethargic(adjective, action, dull, quiet, weak) |
| inert(adjective, calm, dull, quiet, weak) |
| dull(adjective, quiet, flat, low, sad) |
| listless(adjective, dull, quiet, weak, energy) |
| indolent(adjective, dull, slow, careless, relaxed) |
| lazy(adjective, dull, weak, easy, slow) |
| languid(adjective, dull, quiet, weak, easy) |
| slow(adjective, dull, quiet, weak, easy) |
| sleepy(adjective, dull, quiet, slow, careless) |
| slothful(adjective, dull, quiet, flat, low) |
| apathetic(adjective, dull, quiet, hard, weak) |
| half-assed |
| languorous(adjective, dull, weak, easy, flat) |
| idle(adjective, calm, dull, slow, careless) |
| indifferent(adjective, dull, quiet, hard, weak) |
| lifeless(adjective, calm, dull, quiet, flat) |
| dormant(adjective, calm, dull, slow, still) |
| lackadaisical(adjective, dull, weak, easy, flat) |