on one's last legs
dying
on the way out
bite the biscuit
cross the Styx
bite the big one
cash in one's chips
cop one's whack
turn up one's toes
meet one's doom
flatline
cark it
keel over
hand in one's dinner pail
querk
succumb
peg out
quell
take a dirt nap
check out
go to sleep
slip one's wind
go belly-up
hand in one's checks
go
bite the dust
pass the river
pop one's clogs
peg it
go out
kick the bucket
fall off one's perch
depart
demise
suck the kumara
cock one's toes
drop off the hooks
toddle off
join the choir invisible
go the way of all the earth
draw one's last breath
pass in one's checks
turn to dust
kick
croak
expire
go home
cash in
pass on
buy it
snuff it
sputter out
pass
on one's deathbed
meet one's end
pass away
pay the debt of nature
knocking on heaven's door
with one's last breath
moribund
conk out
return to dust
at death's door
eat it
extinguish
have one foot in the grave
redie
ND
an hero
kevork
top oneself
top
end it all
end one's life
drop dead
pop off
doom
big sleep
curtain
check-out time
loss of life
expiry
mortality
status zero
end
dead man walking
quietus
last roundup
demean
fatality
death glare
knock on heaven's door
mortally
in extremis
push up daisies
thanatogenetic
deathwards
deathfully