irretrievable
lost
unretrievable
ago
antiquated
antique
beyond recall
beyond remedy
blown over
by
bygone
bypast
cureless
dated
dead
dead and buried
deceased
defunct
departed
elapsed
expired
extinct
finished
forgotten
gone
gone glimmering
gone-by
has-been
hopeless
immedicable
incorrigible
incurable
inoperable
irreclaimable
irredeemable
irreformable
irremediable
irreparable
irreversible
irrevocable
lapsed
no more
obsolete
over
passe
passed
passed away
aguish
allograft
alter
central-station
common-mode
irreconcileable
itscore
no-one
orse
reparable
roundabout
second-stage
unmystical
unobtainable
unrealizable
unsalable
voters'
washable
world-famed