have one foot in the grave
kill
close one's eyes for the last time
demise
exit
cash in
keel over
draw one's last breath
meet one's doom
pass on
succumb
go home
slip one's wind
hand in one's dinner pail
pass away
meet one's end
querk
bite the big one
go to sleep
expire
go belly-up
peg it
cross the Styx
kick
bite the biscuit
cop one's whack
fall off one's perch
pass the river
pay the debt of nature
peg out
sputter out
suck the kumara
hand in one's checks
take a dirt nap
cark it
check out
lose the number of one's mess
quell
kick the bucket
bite the dust
buy it
croak
drop off the hooks
join the choir invisible
pass
pass in one's checks
cash in one's chips
go the way of all the earth
flatline
go out