ablative
biodegradable
coming apart
corrosive
cracking
crumbling
decadent
declining
decomposable
decomposing
decrepit
degenerate
degradable
deteriorating
dilapidated
disintegrable
disintegrated
disintegrative
disjunctive
disruptive
draining
drooping
dwindling
ebbing
effete
erosive
fading
failing
falling
flagging
fragmenting
going to pieces
infirm
languishing
marcescent
moldering
pining
poor
poorish
ravaged
regressive
resolvent
retrograde
retrogressive
rotten
rotten at
ruinous
separative
shriveling
sinking
integrating