I assure you once for all that I did not mean to intoxicate Diana and henceforth I shall cover the past with the mantle of oblivion.’
She determined to "shroud her feelings in deepest oblivion," and it may be stated here and now that she did it, so successfully that Gilbert, who possibly was not quite so indifferent as he seemed, could not console himself with any belief that Anne felt his retaliatory scorn.
There are no more uses of "oblivion" in the book.
Show samples from other sources
And if he kept his eye peeled quickly he would see himself, an instant before oblivion,
Ray Bradbury -- Fahrenheit 451
The ache inside Thomas was deep and gnawing, and he tried to sink further into oblivion.