Incurable
deadly
fatal
hopeless
inoperable
impossible
terminal
cureless
immedicable
irrecoverable
irremediable
irreparable
nowhere to go
out of time
remediless
serious
uncorrectable
unrecoverable
@everyone, @LostInParadise‘s question. “What do these two words have in common”?
But if two or three other words can help me see the common thread that’s why I asked it that way.