raison d’être
noun/ˌreɪzɒ̃ ˈdetrə/
/ˌreɪzɔːn ˈdetrə/
[singular] (from French)- the most important reason for somebody’s/something’s existence
- Work seems to be her sole raison d'être.
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raison d’être
Definition of raison d’être noun from the Oxford Advanced Learner's Dictionary
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