bitter
disagreeable
dislikable
displeasing
distasteful
flat
flavorless
foul-tasting
ill-flavored
insipid
savorless
sour
tasteless
thankless
ugly
unalluring
unappealing
unattractive
undelectable
undelicious
undesirable
unengaging
unenjoyable
uninviting
unlikable
unpalatable
unpleasant
unpleasing
unsavory
untasteful
untasty
unwelcome
appetizing
bite-sized
carob
cost-prohibitive
daintiest
erosive
evil-smelling
high-protein
hummocky
indigestible
machinelike
near-death
new-risen
noonday
palatable
pustulant
silvan
tastiest
toothsome
vile-looking
wheatless