sorrowful
unhappy
depressed
melancholy
gloomy
somber
dismal
heavy-hearted
mournful
dreadful
dreary
flat
blah
dull
in the dumps
sullen
moody
sulky
out of sorts
low
discontented
discouraged
disappointed
concerned
sympathetic
compassionate
choked up
embarrassed
shameful
ashamed
useless
worthless
ill at ease