Synonyms and related words :
best seller, big hit, boutade, brainstorm, brilliant success, capriccio, caprice, chic, conceit, crank, craze, crazy idea, crotchet, cry, faddiness, faddishness, faddism, faddist, fancy, fantastic notion, fantasy, flimflam, fool notion, freak, freakish inspiration, furore, gas, gasser, great success, harebrained idea, hit, humor, killing, kink, maggot, megrim, meteoric success, mode, momentary success, notion, novelty, passing fancy, quirk, rage, resounding triumph, riot, roaring success, sensation, smash, smash hit, style, toy, triumph, vagary, vogue, whim, whim-wham, whimsy, wow, wrinkle