This page is about the idiom raison d'êtreFORMAL
Your raison d'être is your reason for living, or the most important thing in your life.
- When he was young, Carl's raison d'être was enjoying life and exploring its possibilities. But after he got married and had kids, it was all about his family.
- Barbara says her company's raison d'être has always had as much to do with serving the community as with generating profits.
Origin: Borrowed from French, in which it means "reason for being".
My great aunt's raison d'être had been her work. For her,
Contributor: Matt Errey