lambaste

v. beat unmercifully; rebuke strongly, reprimand (also lambast)

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Verb
1. beat with a cane
(synonym) cane, flog, lambast
(hypernym) beat, beat up, work over
2. censure severely or angrily; "The mother scolded the child for entering a stranger's car"; "The deputy ragged the Prime Minister"; "The customer dressed down the waiter for bringing cold soup"
(synonym) call on the carpet, rebuke, rag, trounce, reproof, lecture, reprimand, jaw, dress down, call down, scold, chide, berate, bawl out, remonstrate, chew out, chew up, have words, lambast
(hypernym) knock, criticize, criticise, pick apart
(hyponym) chastise, castigate, objurgate, chasten, correct

v. whip, strike with a whip, lash, flog, switch, whip or beat with a switch

(v. t.)
To beat severely.
  

Synonyms and related words:
admonish, attack, bang, baste, batter, bawl out, beat, beat all hollow, beat hollow, belabor, berate, best, birch, blister, bludgeon, buffet, call down, cane, castigate, censure, chew, chew ass, chew out, chide, clobber, crawl, cudgel, cuss out, defeat, destroy, do in, dress down, drub, excoriate, fix, flail, flap, flay, flog, give a going-over, give hail Columbia, give hell, give the deuce, give what-for, hammer, hide, hors de combat, horsewhip, jack up, knock, larrup, lash, lather, lick, maul, outclass, outdo, outfight, outgeneral, outmaneuver, outpoint, outrun, outsail, outshine, paste, patter, pelt, pommel, pound, pulverize, pummel, put, rap, ream, ream ass, ream out, rebuke, reprimand, reprove, revile, ruin, scold, scourge, settle, shellac, sit on, skin, skin alive, sledgehammer, smear, smother, spank, thrash, thresh, thump, trim, triumph over, trounce, undo, upbraid, wallop, whip, worst