Ache, Ail, Anguish, Arrhythmia, Barrage, Beat, Tremble, Trembling, Tremor, Trepidation, Tumble, Twinge, Twitch, Twitter, Unrest, Upbeat, Vibrate, Wave, Waver, Wiggle, Wince, Wriggle, Writhe, Beating, Bicker, Blanch, Blench, Dance, Disquiet, Disquietude, Dithers, Downbeat, Drum, Drumbeat, Drumming, Fidget, Fidgets, Flap, Flick, Flicker, Flip, Flit, Flop, Flutter, Glow, Grimace, Gutter, Heartbeat, Heave, Heaving, Hurt, Jerk, Offbeat, Palpitate, Palpitation, Pant, Panting, Patter, Pound, Pounding, Pulsate, Pulsation, Pulse, Quake, Quaking, Quaver, Quavering, Quiver, Quivering, Resonate, Restlessness, Rhythm, Roll, Ruff, Ruffle, Shake, Shakes, Shaking, Shiver, Shivers, Shoot, Shrink, Shudder, Slat, Smart, Spatter, Splatter, Splutter, Sputter, Squirm, Staccato, Suffer, Swell, Tattoo, Tempo, Thrill, Thrum, Thump, Thumping, Tick, Tingle, Toss