happening

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

abounding, crowded, overflowing, populous, swarming, teeming, thronging

semipopular

favorite, preferred, selected

desirable, liked, wanted

celebrated, famed, famous, noted, notorious, prominent, renowned, well-known

fabled, fabulous, legendary

leading, notable, outstanding, prominent, remarkable

important, significant

escapade, lark, ploy

act, action, deed, doing, feat

episode, occasion

baptism, ordeal, test, trial, tribulation

enterprise, risk, venture

expedition, exploration, mission, performance, quest, stunt

coincidence, co-occurrence, fluke, freak

landmark, milepost, milestone, page, phenomenon, turning point

adventure, experience, time

happenchance, happenstance

accident, crisis, emergency, juncture

achievement, deed, exploit, feat

news, tidings