as a symbol or embodiment of high quality or superiority, 1910 (Ritzian, adj., is attested by 1908), a reference to the luxurious Ritz hotels in New York, London, Paris, etc., commemorating Swiss hotelier César Ritz (1850-1918). To put on the ritz "assume an air of superiority" is recorded from 1926. A verb ritz "to behave haughtily" is recorded from 1911. As an adjective by 1926.
1870, "public path beside a waterway," usually having buildings along the land side, from French quai (12c., see quay). In a French context it is often short for Quai d'Orsay, the street on the south bank of the Seine in Paris, since mid-19c. site of the French Ministry of Foreign Affairs and hence sometimes used metonymically for it (by 1922).
1550s, "state or character of being essentially different;" 1590s, "quality of being unequal in rank, condition, etc.;" from French disparité (16c.), from Medieval Latin disparitatem (nominative disparitas) "inequality," from dis- "not" (see dis-) + paritas "parity," from Latin adjective par (genitive paris) "equal" (see par (n.)). Related: Disparities.
card game popular in European high society in mid-1800s, 1861, from French bézigue (popular in Paris casinos in the 1840s), apparently originally besi or besit, but of unknown origin. Up to four can play, using two packs from which the number cards from 2 to 6 have been removed.
1570s, "equality or equivalence of rank or status," from French parité (14c.) or directly from Late Latin paritas "equality," from Latin adjective par (genitive paris) "equal" (see par (n.)). Meaning "state or condition of being on a level" is from 1610s. Meaning "condition in which adversaries have equal resources" is from 1955, originally in reference to the U.S.A. and the U.S.S.R.