de rigueur

Definition

Necessary according to etiquette, protocol or fashion.

Etymology

Borrowed from French de rigueur (“required”), from de (“of”) + rigueur (“rigour/rigor”).

Example Sentences

• "Wearing a suit to a job interview is de rigueur."
• "This season, the little black dress is de rigueur."
• "[…] his nose—if a sketch of his features be de rigueur for a person of his pretensions—was artistically beautiful enough to have been worth doing in marble by any sculptor not over-busy, […]."