ennui (n.)
- acedia
- angst
- anguish
- anxiety
- apathy
- blues
- boredom
- cheerlessness
- dejection
- depression
- discomfort
- discomposure
- discontent
- dislike
- dispiritedness
- displeasure
- disquiet
- dissatisfaction
- doldrums
- dread
- drowsiness
- dullness
- dumps
- emptiness
- enervation
- fatigue
- flatness
- grimness
- heaviness
- hebetude
- indifference
- inquietude
- joylessness
- languor
- lassitude
- lenitude
- lethargy
- lifelessness
- listlessness
- malaise
- melancholy
- nausea
- oscitancy
- painfulness
- pall
- passivity
- phlegm
- sadness
- satiation
- satiety
- savorlessness
- sleepiness
- sloth
- slothfulness
- slowness
- sluggishness
- somnolence
- spiritlessness
- spleen
- staleness
- stupefaction
- stupor
- surfeit
- tastelessness
- tediousness
- tedium
- tire
- tiredness
- torpidity
- torpidness
- torpor
- uncomfortableness
- unease
- uneasiness
- unhappiness
- weariness
- world-weariness
- yawn
