| otiosity(noun, dullness, apathy, lethargy, negligence) |
| overtiredness(noun, weakness, fatigue, lethargy, tiredness) |
| phlegm(noun, fatigue, stupor, tiredness, lassitude) |
| remissness(noun, dullness, apathy, lethargy, negligence) |
| slackness(noun, dullness, apathy, lethargy, negligence) |
| sloth(noun, dullness, apathy, fatigue, lethargy) |
| somnolence |
| sorrow(noun, depression, melancholy, sadness, gloom) |
| sterileness(noun, excite, lack, routine, dullness) |
| sterility(noun, excite, lack, routine, dullness) |
| stodginess(noun, excite, lack, routine, dullness) |
| stolidity(noun, dullness, apathy, lethargy, negligence) |
| stupor(noun, fatigue, tiredness, lassitude) |
| surfeit(melancholy, sadness, apathy, languor, boredom) |
| taedium vitae(expression, idiom, dejection) |
| tardiness(noun, dullness, apathy, lethargy, negligence) |
| tediousness(noun, routine, dullness, slowness, mildness) |
| torpescence(noun, dullness, apathy, lethargy, negligence) |
| torpidity(noun, fatigue, stupor, tiredness, lassitude) |
| torpor(noun, fatigue, stupor, tiredness, lassitude) |