| slumberous(adjective, dull, quiet, slow, cold) |
| spiritless(adjective, dull, quiet, weak, easy) |
| unconcerned(adjective, calm, dull, weak, heavy) |
| dallying(adjective, dull, slow, idle, late) |
| dawdling(adjective, slow, late, delayed, overdue) |
| dim(adjective, dull, simple, slow, unintelligent) |
| drugged(adjective, cold, dead, tired, senseless) |
| easy(adjective, dull, quiet, weak, slow) |
| immobile(adjective, calm, dull, quiet, gentle) |
| insensible(adjective, dull, quiet, flat, slow) |
| lagging(adjective, dull, slow, idle, lazy) |
| lax(adjective, dull, slow, late, lazy) |
| off(adjective, dull, increase, moderate, low) |
| poky(adjective, slow) |
| quiet(adjective, calm, dull, heavy, lazy) |
| remiss(adjective, dull, slow, late, inactivity) |
| shiftless(adjective, action, dull, slow, careless) |
| soporific(adjective, dull, quiet, slow, heavy) |
| static(adjective, dull, quiet, still, lifeless) |
| still(adjective, calm, dull, quiet, gentle) |