See flap in Webster's New World Roget's A-Z Thesaurus II
An interruption of regular procedure or of public peace:
agitation, commotion, disorder, disturbance, helter-skelter, stir1, tumult, turbulence, turmoil, uproar. (Informal) to-do. See calm, orderTo move (one's arms or wings, for example) up and down:
beat, flitter, flop, flutter, waggle, wave. See repetitionTo move or cause to move about while being fixed at one edge:
flutter, fly, wave. See repetitionTo move through the air with or as if with wings:
flit, flitter, flutter, fly, sail, wing. See moveLearn more about flap