More French words and expressions commonly used in English:
Mardi gras fat Tuesday
Celebration before Lent, Carnaval
Mot juste right word
Exactly the right word or expression.
Nouveau riche new rich
Disparaging term for someone who has recently come into money.
Nouvelle cuisine new cuisine
Cooking style developed in the 1960’s and 70’s that emphasized lightness and freshness.
Par excellence by excellence
Quintessential, preeminent, the best of the best
Petit, petite small, short
Also: Joie de vivre