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
Zuzana	-	Czech, Slovak
Janne (2)	-	Danish, Norwegian
Layne	[lein]
Magnhild	-	Norwegian
Callisto (2)	kə-LIS-to (English)	Greek Mythology (Latinized)
Olle	-	Swedish