Downfall, Drop, Dump, Encounter, Fall, Falter, Farrago, Fell, Fidget, Floor, Flop, Flounce, Flounder, Flutter, Fumble, Garble, Glow, Ground, Grovel, Hash, Header, Heave, Jerk, Jumble, Level, List, Litter, Lose, Lurch, Mash, Mess, Mix, Muddle, Palpitate, Pant, Perceive, Pi, Pitch, Plunge, Pound, Precipitate, Prostrate, Quake, Quaver, Quiver, Raze, Rear, Reel, Riffle, Rock, Roll, Rummage, Apprehend, Blunder, Blur, Bow, Breakdown, Bulldog, Capsize, Career, Clutter, Collapse, Comedown, Comprehend, Confound, Confuse, Crash, Cropper, Crumble, Deck, Deflation, Descend, Dig, Disintegrate, Dive, Down, Scramble, Seethe, Shake, Shiver, Shuffle, Slip, Slump, Smash, Spill, Sprawl, Squirm, Stagger, Struggle, Stumble, Succumb, Sway, Swell, Swing, Tailspin, Thrill, Throb, Throw, Tilt, Tingle, Topple, Toss, Totter, Tremble, Trip, Turmoil, Twitch, Twitter, Understand, Upset, Wallop, Wallow, Welter, Wiggle, Wriggle, Writhe, Yaw