Antonyms for extant
all:
extinct.
in existence:
extinct,
gone,
dead.
noun:
former,
defunct,
up,
erstwhile,
archaic,
antique,
nonexistent,
kaput,
antediluvian,
departed,
done,
dated,
destroyed,
future,
bygone,
old-time,
idle,
over,
passe,
completed,
oldfangled,
through,
ago,
ended,
nonextant,
finished,
terminated,
musty,
out-of-date,
old,
coming,
ancient,
past,
inactive,
concluded,
outworn,
unborn,
old fashioned,
exterminated,
fusty,
obsolete,
inert,
antiquated,
lost.