Dictionary & Thesaurus

underworld

1.	(noun) the criminal class
	Related Words: class, social class, socio-economic class

2.	(noun) (in various religions) the world of the dead; "he didn't want to go to hell when he died"
	Synonyms: Hades, Hel, Hell, Scheol, infernal region, netherworld
	Related Words: imaginary place