postdeparture
departing
going
on the wing
on the way out
through
breaking away
decampment
get away
beat a retreat
departer
farewell
bust a move
go about one's business
go on one's merry way
go about one's day
take one's leave
postflight
peace out
take off
take leave
cut one's stick
take wing
depart
start
set forth
set out
start out
plump out
trot off
set off
part
leaving
going away
departure
for a change
cheerio
apopemptic
postfledging
French leave
exiter
make like a banana and split
leaver
vamoose
goer
decamp
jet
so long
make like a tree and leave
skip