exorcism - definition and synonyms

noun [countable/uncountable] 

Your browser doesn’t support HTML5 audio

/ˈeksɔː(r)ˌsɪz(ə)m/
singularexorcism
pluralexorcisms
  1. 2
    something you do that helps you to stop thinking about a bad experience or memory

    Music remains a kind of exorcism for him.