Raison d'être : Noun
Pronunciation: REY-zohn DE-truh’; Fr. R*e-zawn* DE-tr*uh*
Difficulty Level: High
Meaning: refers to the purpose of living; the reason to exist
Usage/Example
1. In today's mechanized warfare, mounted cavalry has lost its raison d’être.
2. The Act introduced the 'Three Fs' in an attempt to destroy the raison d'être of the Land League.