oblivion

noun

1 he closed his eyes again and sank back into oblivion:

unconsciousness, insensibility, stupor, stupefaction, senselessness, blankness, darkness;

coma, blackout;

obliviousness, unawareness, ignorance, amnesia;

literary the waters of Lethe.

▷antonyms consciousness, awareness.

2 their words have been consigned to oblivion | they rescued him from artistic oblivion:

obscurity, non-existence, limbo, void, vacuum, nothingness, nihility, nullity, extinction, anonymity, neglect, disregard.

▷antonyms fame.

oblivion Oxford Dictionary of English