on one's last legs
on one's deathbed
knocking on heaven's door
return to dust
conk out
moribund
with one's last breath
ND
dying
querk
go
draw one's last breath
bite the dust
croak
depart
sputter out
drop off the hooks
go home
go belly-up
hand in one's dinner pail
cock one's toes
slip one's wind
suck the kumara
toddle off
turn to dust
go out
bite the biscuit
cross the Styx
cop one's whack
expire
fall off one's perch
flatline
check out
pass
pass the river
peg out
join the choir invisible
demise
cark it
kick the bucket
pass away
cash in one's chips
turn up one's toes
peg it
meet one's end
pass in one's checks
pass on
go to sleep
buy it
pay the debt of nature
pop one's clogs
keel over
quell
eat it
go the way of all the earth
succumb
take a dirt nap
hand in one's checks
meet one's doom
kick
bite the big one
cash in
on the way out
snuff it
have one foot in the grave
an hero
top oneself
at death's door
end it all
mortally
top
promote to Glory
end one's life
kevork
have had it
knock on heaven's door
dead man walking
commorient
hydromania
drop dead
pop off
suicidal
redie
medium dead
felicidal
push up daisies
extinguish
fatally
life-threatening
in extremis
departure
grave
kamikaze
eternal sleep
close one's eyes for the last time
life-or-death
fuck off
dyingly