bash, baste, bat, batter, beat, belabor, belt, birch, bludgeon, buffet, bung up, club, do, drub, fib(British), flog, hammer, hide, lace, lambaste(or lambast), lash, lather, lick, maul, mess (up), paddle, pelt, pommel, pound, pummel, punch out, rough (up), slate, slog, switch, tan, thrash, thresh, thump, tromp, wallop, whale, whip, whop(or whap), whup, work over

assail, assault, attack, beset, box, bust, chop, clobber, clout, crack, cudgel, cuff, descend (on or upon), hit, jump (on), knock, lam, lay on, paste, pounce (on or upon), punch, raid, rush, slam, slap, smack, smash, sock, spank, storm, swat, swipe, thwack, whack, wham, whompblackjack, cane, cowhide, flagellate, fustigate, horsewhip, leather, pistol-whip, rawhide, scourge, strapgore, lacerate, woundmaim, mangle, mutilate

beat up on