slippery
slippy
bad
coming apart
cracking
crumbling
decadent
declining
degenerate
despaired of
deteriorating
disintegrating
done for
draining
drooping
dwindling
dying
ebbing
effete
expiring
facing death
fading
failing
falling
flagging
fragmenting
given up
going
going to pieces
gone to seed
hopeless
in articulo mortis
in extremis
incapable of life
languishing
low
marcescent
moribund
near death
nonviable
on the downgrade
out of condition
out of shape
out of training
pining
regressive
retrograde
retrogressive
run to seed
rusty
shriveling
sinking
chipping
clipping
dipping
dripping
equipping
flipping
gripping
nipping
outstripping
ripping
shipping
sipping
skipping
stripping
tipping
tripping
whipping
zipping