boredom (n.)
- acedia
- aloofness
- angst
- anguish
- anxiety
- apathy
- carelessness
- cheerlessness
- detachment
- discomfort
- discomposure
- discontent
- disgust
- disinterest
- disinterestedness
- dislike
- dispiritedness
- displeasure
- disquiet
- dissatisfaction
- distaste
- doldrums
- dread
- dreariness
- drowsiness
- dullness
- emptiness
- enervation
- ennui
- fatigue
- flatness
- grimness
- heaviness
- hebetude
- heedlessness
- impassiveness
- impassivity
- indifference
- inquietude
- insouciance
- joylessness
- languor
- lassitude
- lenitude
- lethargy
- lifelessness
- listlessness
- malaise
- melancholy
- monotony
- nausea
- oscitancy
- painfulness
- passivity
- phlegm
- satiation
- satiety
- savorlessness
- sleepiness
- sloth
- slothfulness
- slowness
- sluggishness
- somnolence
- spleen
- staleness
- stolidity
- stupefaction
- stupor
- tastelessness
- tediousness
- tedium
- tiredness
- torpidity
- torpidness
- torpor
- uncomfortableness
- unconcern
- unease
- uneasiness
- unhappiness
- unmindfulness
- weariness
- withdrawal
- world-weariness
- yawn
