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raison d'être

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noun [countable] raison d'être pronunciation in British English /ˌreɪzɒ̃ ˈdetrə/ 
Word Forms
singularraison d'être
pluralraisons d'être
  1. 2
    the main purpose of someone's life

    Looking after her grandchildren seemed to be her whole raison d'être.


a paid holiday given to a new employee before they start their job

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