at rest
calm
cloistered
collapsing
coming apart
contractive
cool
cracking
crumbling
decadent
deciduous
declining
declivitous
decreasing
decrescendo
decrescent
decurrent
degenerate
deliquescent
descendant
descending
deteriorating
diminishing
diminuendo
disintegrating
down
down-reaching
downcoming
downfalling
downgoing
downhill
downsinking
downward
draining
drooping
dropping
dwindling
ebbing
effete
even-tenored
fading
failing
falling
flagging
fragmenting
going to pieces
halcyon
hushed
impassive
isolated
sinking
abiding
biding
chiding
coinciding
colliding
confiding
deciding
deriding
dividing
gliding
guiding
hiding
presiding
providing
residing
riding
siding
sliding
striding
tiding