[{"Bold_text": "verb (used without object)", "List Items": ["to wave, flap, or toss about:Banners fluttered in the breeze.", "to flap the wings rapidly; fly with flapping movements.", "to move in quick, irregular motions; vibrate.", "to beat rapidly, as the heart.", "to be tremulous or agitated.", "to go with irregular motions or aimless course:to flutter back and forth."]}, {"Bold_text": "verb (used with object)", "List Items": ["to cause to flutter; vibrate; agitate.", "to throw into nervous or tremulous excitement; cause mental agitation; confuse."]}, {"Bold_text": "noun", "List Items": ["a fluttering movement:He made little nervous flutters with his hands.", "a state of nervous excitement or mental agitation:a flutter of anticipation.Synonyms: dither , stir , twitter , flurry", "flutter kick flutter kick.", "Audio.a variation in pitch resulting from rapid fluctuations in the speed of a recording.Compare wow2(def1) wow2(def1).", "Chiefly British.a small wager or speculative investment."]}]