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
Hisein	-	Arabic
Aghi	-	Ancient Scandinavian
Keisha	KEE-shə	African American
RagnbjÖRg	-	Ancient Scandinavian
Goddard	GAHD-ərd	English (Rare)
Cephas	SEE-fəs (English)	Biblical, Biblical Latin