THESAURUS
welter
arsy-varsiness, bask, bend, blunder, careen, career, clutter, cower, cringe, crouch, falter, farrago, flounce, flounder, get down, grovel, hash, heave, helter-skelter, higgledy-piggledy, hobbyhorse, hodgepodge, hunch, hunch down, hysteron proteron, indulge, jumble, labor, litter, lurch, luxuriate, make heavy weather, mess, mishmash, mummify, mummy, pitch, pitch and plunge, pitch and toss, plunge, pound, rear, reel, revel, rock, roll, rollick, scend, scramble, scrouch down, seethe, shrivel, squat, stagger, stoop, strive, struggle, stumble, sway, swing, thrash about, topsy-turviness, topsy-turvydom, toss, toss and tumble, toss and turn, totter, tumble, turmoil, unholy mess, volutation, wallop, wallow, wilt, wizen, writhe, yaw
ROGET THESAURUS
welter
Plunge
VB
plunge, dip, souse, duck, dive, plump, take a plunge, take a header, make a plunge, bathe, submerge, submerse, immerse, douse, sink, engulf, send to the bottom, get out of one's depth, go to the bottom, go down like a stone, drop like a lead balloon, founder,
welter, wallow.
Rotation
VB
rotate, roll along, revolve, spin, turn round, circumvolve, circulate, gyre, gyrate, wheel, whirl, pirouette, twirl, trundle, troll, bowl, roll up, furl, wallow,
welter, box the compass, spin like a top, spin like a teetotum, spin out.