fall away
stop
bail out on
lose
spare
desist
throw in one's hand
stay
stop short
put one's foot down upon
put one's foot down on
derepress
cheese
unmanage
lose the plot
wean
leave someone high and dry
knock it off
cut
release
decline
straighten out
waive
unhate
lay off
desolate
abort
unhappen
leave someone holding the bag
unnotice
leave off
jib
put out to pasture
give up the ghost
evacuate
de-ethnization
desistor
turn back
unglue
demotivate
disuse
lin
revoker
devall
keep from
rest
take one's ball and go home
withdraw
lose one's way
unauthorize
come round
let up
disendorse
fall out
forsaking
opt out
give over
depathologize
unmother
unvolunteer
withsay
ditch
let the matter drop
abolitionist
dry one's eyes
get off someone's back
unrecognize
wrong
uncommit
stand out
nonparticipation
give someone a break
unjoin
bog in
balker
non-engagement
leave someone in the lurch
unaccept
pull one's head in
halt
choke off
disbelieve
non-involvement
baulker
noncompliant
unjerk
dry up
drop
deprescribe
taciturnity
nol-pros
cede the field
cancel
set aside
unyoke
scorn