oblivion - definition and synonyms

noun [uncountable] 

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/əˈblɪviən/
  1. 1
    a situation in which someone or something has been completely forgotten

    a Hollywood star who has gradually faded into oblivion

  2. 2
    a state in which you do not notice what is happening around you, usually because you are sleeping or very drunk

    Drinking himself into oblivion won’t solve any of his problems.