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.

to be sleeping very deeply Guy was curled up on the sofa, dead to the world.

Name	Pronounced	Usage
Konani	-	Hawaiian
Beileag	-	Scottish
Nana (1)	-	Greek
Faina	fah-EE-nah	Russian
Agar	-	Biblical Latin, Biblical Greek
Salamon	-	Hungarian