be dead to the world

be dead to the world

To be sleeping very soundly. Don't worry, the vacuum won't wake him—he's dead to the world.
See also: dead, world
Farlex Dictionary of Idioms.
See also:
  • dead president
  • president
  • dead drunk
  • dead cinch
  • dead broke
  • dead easy
  • dead of night
  • the dead of night
  • dead tired
  • (as) dead as a herring