conventional
indigestible
unfashionable
unstylish
Spartan
adhesive
aloof
amylaceous
apathetic
arid
banausic
barren
blah
bland
blank
bloodless
boring
characterless
clabbered
clammy
clotted
coagulated
cold
colorless
curdled
dead
deadly
detached
dim
dismal
doughy
dowdy
draggy
drearisome
dreary
dry
dryasdust
dull
dusty
effete
elephantine
empty
etiolated
fade
flat
fogyish
frumpish
frumpy
fuddy-duddy
gaumy
gelatinous
glairy
gluelike
gluey
stodgier
stodgiest
3-part
bite-sized
blue-checked
egomaniacal
farfetched
flutelike
grandiloquent
hard-up
homelier
lackluster
long-winded
mushy
perky
purse-proud
repellant
repetitious
stagey
stilted
stuffy
unadventurous
unpliable
wearisome
kaji