about-face
apostasy
backing
backset
backslide
backslider
backsliding
backward motion
backward step
cock
decline
degenerate
degeneration
deteriorate
deterioration
disenchantment
disimprove
fade
fading
fail
failing
failure
fall
fall again into
fall astern
fall back
fall behind
fall from grace
falling back
flip-flop
get back
get behind
get worse
go back
go backwards
go behind
grow worse
have a relapse
jerk back
lapse
lapse back
lapsing
let down
lose ground
pull back
reaction
recede
change state
regress
retrovert
return
revert
turn
turn back
relapsed
relapses
relapsing
breakdown
dehydration
epidemic
illness
incidence
indisposition
inroads
outbreak
recurrence
remission
schism
setback
Japs
Lapps
apps
caps
chaps
claps
collapse
craps
elapse
flaps
gaps
lapps
laps
maps
naps
perhaps
raps
saps
schnapps
scraps
slaps
snaps
straps
taps
traps
wraps
yaps
zaps