noun
oblivion
uh-BLIV-ee-uhn/əˈblɪviən/
A state of complete unconsciousness.
The anesthetized man lies in oblivion beneath the surgical drape.

Etymology
Latin forgetfulness and being forgotten led to a state of forgottenness or unconsciousness.
More examples
- She sinks into the oblivion of deep sleep.
- He wakes from drug-induced oblivion.
Forms
oblivion
Similar words
- unconsciousness
- The direct general term for absence of awareness.
- insensibility
- A state of lacking consciousness or responsiveness.