boulevardier \boo-luh-var-DYAY; bul-uh-\, noun
2. A sophisticated, worldly, and socially active man; a man who frequents fashionable places; a man-about-town.
Oswald, whose idea of excitement is breakfasting with a penguin, is a boulevardier: Hat cocked precariously on his head, he saunters out into the sunny city.
— Tom Gliatto, “Tube”, People