craze, fashion, vogue, rage, trend, mania, enthusiasm, affectation, fancy, caprice, whim, style, freak, hobby, cry, novelty, innovation, custom, amusement, humor, vagary, dernier cri (French), crotchet, maggot, quirk, kink, eccentricity, passing fashion, popular innovation, prevailing taste, frivolity, whimsy, passing fancy, sensation, furor, the latest word*, all the rage*, the thing*, the latest thing*, the in thing*, the last word*, the new look*, in joke*, flash in the pan*, nine days' wonder*.
Antonyms custom*, convention, tradition. See syn. study at fashion.fashion.