lost
doomed
pre-dead
goner
thanatognomonic
deathbound
Moros
suicidal
written in the stars
dead man walking
intestate
certain
way of all flesh
sure
imminentness
with one's last breath
impendence
forthcomingness
impendency
imminency
imminence
linger
drop dead
pop off
deader
deathism
imminently
in extremis
wisdom of Silenus
in articulo mortis
moribund
on one's deathbed
have one foot in the grave
permadie
die away
knocking on heaven's door
predecease
deathward
deathling
deathly
until Kingdom come
vitally challenged
dying
have had it
instadeath
perimortem
mortal
probable
hydromania
bereave