dejected
spiritless
blase
blue
bowed-down
cast down
dashed
daunted
demoralized
depressed
despairing
despondent
desponding
disconsolate
discouraged
disheartened
down
down(predicate)
downcast
downhearted
drooping
droopy
fed-up
feeling low
good and tired
heartless
hypochondriac
hypochondriacal
in low spirits
in the depths
in the doldrums
in the dumps
irked
jaded
languishing
life-weary
low
low-spirited
melancholic
melancholy
pessimistic
pining
sad
satiated