Brownian movement
advance
aging
angular motion
anxious
apprehensive
ascending
ascent
axial
axial motion
back
back-flowing
backflowing
backing
backward
backward motion
bad
baptism
burial
career
climbing
collapsing
coming apart
concavity
course
cracking
crumbling
current
de-escalation
debasement
decadent
deciduous
declining
declivitous
decurrent
deepening
degenerate
degradation
dejected
demotion
depressed
depression
descendant
descending
descent
desolate
despaired of
despairing
deteriorating
detrusion
sink
anxiety
decrease
drop-off
lessening
blinking
drinking
linking
plinking
rethinking
shrinking
stinking
thinking
unthinking
winking