late 16c., "man of the world; citizen of the world," from Greek kosmopolites "citizen of the world," from kosmos "world" (see cosmos) + polites "citizen" (see politic). In common use 17c. in a neutral sense; it faded out in 18c. but was revived from c. 1800 with a tinge of reproachfulness (opposed to patriot).[cosmopolite etymology, cosmopolite origin, 英语词源]