| boredom(noun, melancholy, routine, dullness, discontent) |
| tedium(noun, melancholy, routine, dullness, apathy) |
| monotony(noun, melancholy, routine, dullness, apathy) |
| dullness(noun, melancholy, routine, apathy, indifference) |
| ennui(noun, melancholy, routine, dullness, apathy) |
| routine(noun, dullness, slowness, tedium, feebleness) |
| tiresomeness(noun, melancholy, routine, dullness, apathy) |
| stuffiness |
| dryness(noun, routine, dullness, slowness, tedium) |
| flatness(noun, melancholy, routine, dullness, apathy) |
| dreariness(noun, routine, dullness, slowness, tedium) |
| insipidity(noun, routine, dullness, slowness, tedium) |
| lifelessness(noun, routine, dullness, slowness, tedium) |
| vapidity(noun, routine, dullness, slowness, tedium) |
| weariness(noun, routine, dullness, slowness, mildness) |
| wearisomeness(noun, routine, dullness, tedium, weariness) |
| apathy(noun, melancholy, dullness, indifference, discontent) |
| deadliness(noun, dullness, tedium, wearisomeness) |
| deadness(dullness, monotony, ennui) |
| discontent(melancholy, ennui) |