Trounce \Trounce\, v. t. [imp. & p. p. Trounced; p. pr. & vb. n. Trouncing.]

[F. tronce, tronche, a stump, piece of wood. See Truncheon.]

To punish or beat severely; to whip smartly; to flog; to castigate. [Colloq.]

[1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

92 Moby Thesaurus words for "trounce": assail, attack, baste, bastinado, bear the palm, beat, beat all hollow, beat hollow, belabor, belt, best, birch, blister, buffet, cane, castigate, clobber, club, cowhide, cudgel, cut, defeat, destroy, do in, drub, excoriate, fix, flagellate, flail, flay, flog, fustigate, give a whipping, give the stick, hide, hors de combat, horsewhip, knout, lace, lambaste, lash, lather, lay on, lick, outclass, outdo, outfight, outgeneral, outmaneuver, outpoint, outrun, outsail, outshine, overwhelm, pistol-whip, pommel, pummel, put, rawhide, roast, ruin, scarify, scathe, scorch, scourge, settle, shellac, skin, skin alive, slash, smite, spank, strap, stripe, swinge, switch, take the cake, thrash, thump, trim, triumph, triumph over, truncheon, undo, walk all over, wallop, whale, whip, whomp, whop, win, worst

Source: Moby Thesaurus II by Grady Ward, 1.0
 

trounce

Source: WordNet (r) 2.0
 

Trounce \Trounce\, v. t. [imp. & p. p. Trounced; p. pr. & vb. n. Trouncing.]

[F. tronce, tronche, a stump, piece of wood. See Truncheon.]

To punish or beat severely; to whip smartly; to flog; to castigate. [Colloq.]

Source: Webster's Revised Unabridged Dictionary (1913)