acedia
aloofness
angst
anguish
anxiety
apathy
ataraxia
ataraxy
benumbedness
blah
blue devils
blues
boredom
cheerlessness
comatoseness
detachment
discomfort
discomposure
discontent
disinterest
dislike
dismals
dispassion
displeasure
disquiet
dissatisfaction
doldrums
dolefuls
dread
dullness
dumps
emptiness
ennui
existential woe
flatness
grimness
heartlessness
hebetude
hopelessness
inappetence
indifference
inquietude
insouciance
joylessness
lack of appetite
lack of pleasure
languidness
lethargicalness
lethargy
listlessness
tedium