doomsday

noun
dooms*day \ ˈdümz-ˌdā \
before 12th century{ds||1||}
  • a day of final judgment
  • a time of catastrophic destruction and death

doomsday machine

noun
doomsday machine \
  • a machine that will destroy the world

from now until doomsday

idiom
from now until doomsday \
  • for a very long time : forever
Powered by Merriam-Webster