| dilatoriness(noun, dullness, apathy, lethargy, negligence) |
| dimness |
| do-nothingness(noun, dullness, apathy, lethargy, negligence) |
| doltishness(noun, weakness, apathy, nonsense, absurdity) |
| dormancy(noun, dullness, apathy, lethargy, negligence) |
| dreaminess(noun, dullness, apathy, lethargy, negligence) |
| drowsiness(noun, dullness, apathy, lethargy, negligence) |
| faineance(noun, dullness, apathy, lethargy, negligence) |
| faineancy(noun, dullness, apathy, lethargy, negligence) |
| feeble-mindedness(noun, weakness, apathy, nonsense, absurdity) |
| heaviness(noun, dullness, apathy, lethargy, negligence) |
| heedlessness(noun, disregard, apathy, indifference, calmness) |
| idiocy(noun, apathy, nonsense, absurdity, ignorance) |
| idleness(noun, dullness, apathy, lethargy, negligence) |
| impassibility |
| incapacity(weakness, apathy, nonsense, absurdity, ignorance) |
| incuriousness(noun, disregard, feelings, apathy, indifference) |
| indolence(noun, dullness, apathy, lethargy, negligence) |
| inertness(noun, dullness, apathy, lethargy, negligence) |
| lackadaisicalness(noun, dullness, apathy, lethargy, negligence) |