1.NounThe state of forgetting completely, of being oblivious, unconscious, unaware, as when sleeping, drunk, or dead.
"He regularly drank himself into oblivion.; Only the oblivion of sleep can heal the greatest traumas."
2.NounThe state of being completely forgotten, of being reduced to a state of non-existence, extinction, or nothingness, including through war and destruction. for an area like hell, a wasteland.
"Due to modern technology, many more people and much more information will not slip into oblivion, contrary to what happened throughout history until now.; They tried to bomb them into oblivion.; I will cast them into oblivion!"