by chance
perchance
happen
break away
mayhap
peradventure
maybe
possibly
perhaps
stumble
gap
hit
cut out
casual
chance
stand a chance
hazard
in with a chance
skip
vamoose
incidental
decamp
shoot off
bring back
return
take back
bechance
up and leave
end
aleatoric
clear off
op.
happily
bite of the cherry
terminative
half-chance
clear out
jetsam
French leave
escapology
second
disappearing act
fortuitous
run out
run off
pop off
off like a bride's nightie
lottery
unluckily
beetle off
bolt
bolt out
dumb luck
shoot through like a Bondi tram
as luck may have it
farewell
departing
bail
gone
set off
take off
set forth
roll the dice
start
offski
set out
part
start out
desert
depart
balk
shot
bump into
crack
pop out
dissolve
conclude
break up
take a flyer
close
decampment
break
happen along
haul off
no fear
motor
on the way out
ride off
dash off
beat a retreat
dip
book
Houdini
bounce
bug out