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