hip

downtown, edgy, funky

dapper, dashing, dressy, kicky, natty, rakish, sassy, saucy, spiffy, spruce

chichi, classy, flossy, haute (also haut), nobby, posh, ritzy, soigné (or soignée), swank (or swanky)

elegant, graceful, handsome, majestic, refined, sophisticated, stately, tasteful, understated

doggish, doggy, flashy, gallant

dandyish, dudish, foppish

ultrachic, ultracool, ultrahip, ultraposh, ultrasmart, ultrasophisticated

alerted, aware, clued (in), forewarned, informed, prepared, ready, warned

observant, observing, sharp, sharp-eyed

alert, attentive, open-eyed, vigilant, watchful

plugged-in, with-it

à la mode (also a la mode), chic, fashionable, modish, sharp, smart, snappy, stylish, voguish