Merriam-Webster Collegiate Dictionary - flounce

 I. intransitive verb  (~d; flouncing)  Etymology: perhaps of Scandinavian origin; akin to Norwegian flunsa to hurry  Date: 1542  1.  a. to move with exaggerated jerky or bouncy motions ~d about the room, jerking her shoulders, gesticulating — Agatha Christie; also to move so as to draw attention to oneself ~d into the lobby  b. to go with sudden determination ~d out in a huff  2. flounder, struggle  II. noun  Date: 1583 an act or instance of flouncing  • flouncy adjective  III. transitive verb  (~d; flouncing)  Etymology: alteration of earlier frounce, from Middle English frouncen to curl  Date: 1711 to trim with ~s  IV. noun  Date: 1713 a strip of fabric attached by one edge; also a wide ruffle  • flouncy adjective