ballet		[Fr.]: I know not what; an elusive quality.
à la carte		[Fr.]: a fine or noble gesture, often futile
ad absurdum		[Fr.]: a person who lives luxuriously and enjoys good food and drink.
au revoir		is an issue or incident arousing widespread controversy, outside campaigning and/or heated public debate
beau geste		a specialized administrative unit; especially : a subdivision of an executive department of a government b : a branch of a newspaper, newsmagazine, or wire service in an important news center c : a usually commercial agency that serves as an intermediary especially for exchanging information or coordinating activities
bon vivant		[Lat.]: to the point of absurdity.
dolce vita		an ardent devote
Lingua franca		an act justifying war
cest la vie		(Gk) – the common people
mise en scene		a type of dance French.
enfant terrible		on the card; (in restaurants refers to ordering individual dishes rather than a fixed-price meal)
Bureau		See you soon!"; lit. Until the next sight. In French contraction of Au plaisir de vous revoir (=to the pleasure of seeing you again).
hoi polloi		dread and anxiety.
mea culpa		1 : SESSION, SITTING 2 : a spiritualist meeting to receive spirit communications
angst		any of various languages used as common or commercial tongues among peoples of diverse speech
nota bene		[Ital.]: sweet life; the good life perceived as one of physical pleasure and self-indulgence.
cause célèbre		[Fr.]: an incorrigible child; an outrageously outspoken or bold person.
Séance		[Ital.]: note well; take notice.
je ne sais quoi		"That's life!"; or "Such is life!" It is sometimes used as an expression to say that life is harsh but that one must accept it.
Casus belli		[Lat.]: I am to blame
Aficionado		[Lat.]: based on theory rather than observation.
annus mirabilis		[Lat.]: wonderful year.
Persona non grata		[Fr.]: up-to-date.
au courant		unacceptablee or unwelcome person
a priori		[Fr.]: the stage setting; surroundings