Synonyms of thrash

1 Syllable
flail, lashed, flog, maul, spank, tan, flails, stir, belt, slug, lick, rout, mauls, birch, trim, pelt, cane, pound, whip, skelp, crush, whup, thresh, pitch, lash, jerk, whang, thwack, rush, toss, taws, wax, trash, kill, whack
2 Syllables
punish, roughens, sculled, flailing, flounder, outhit, outjump, clobber, strike, leather, tanned, muscling, thwacked, welted, pelting, pummel, tanning, hammer, writhe, pounding, roughen, bested, leathers, trounced, oared, lashes, pestling, surge, writhed, stoning, paddling, welting, paste, caned, buffet, boated, slugged, hammers, flogged, defeat, waltzing, seesaw, wallop, pounded, flapping, trouncing, pelted, trounce, batter, scourge, fishtail, pummels, mauled, flapped, slugging, pestled, spanked, waltzed, mauling, threshes, thwacking, flailed, slaughter, flounders, threshed, chasten, oaring, bury, murder, clobbers, whaled, pestle
3 Syllables
contuse, floundering, hammering, chastise, buffeting, contusing, careered, clobbering, overwhelm, cudgelled, garotte, pummelled, chastised, careering, cudgeled, malleate, pummeling, battered, overran, roughening, overruns, lambasting, cudgeling, clobbered, overwhelms, floundered, oxhide, leathered, battering, leathering, buffeted, lambaste, paddlewhack, roughhoused, librate, chastising, lambasted, hammered, murdered, overrun, belabor, slaughtered, pummeled
4 Syllables
triturate, castigating, pendulate, triturating, oscillate, triturated, castigated, oscillated, flagellating, overrunning, flagellate, horsewhipped, oscillating, teeter-totter, flagellated, castigate