abyss
Pronunciation:
/əˈbɪs//æˈbɪs/noun
Definitions
Hell; the bottomless pit; primeval chaos; a confined subterranean ocean.
(frequently figurative) A bottomless or unfathomed depth, gulf, or chasm; hence, any deep, immeasurable; any void space.
Anything infinite, immeasurable, or profound.
Moral depravity; vast intellectual or moral depth.