See thrash in Webster's New World Roget's A-Z Thesaurus II
verb
To beat (plants) with a machine or by hand to separate the grain from the straw:
flail, thresh. See attack, strikeTo hit heavily and repeatedly with violent blows:
assail, assault, baste, batter, beat, belabor, buffet, drub, hammer, pound, pummel, smash, thresh. (Informal) lambaste. (Slang) clobber. Idiom: rain blows on. See attack, strikeTo punish with blows or lashes:
beat, flog, hide2, lash, whip. (Informal) trim. (Slang) lay into, lick. See attack, rewardTo swing about or strike at wildly:
flail, thresh, toss. Idiom: toss and turn. See attack, move, strikeTo render totally ineffective by decisive defeat:
annihilate, crush, drub, overpower, overwhelm, smash, steamroller, trounce, vanquish. (Informal) massacre, wallop. (Slang) clobber, cream, shellac, smear. See win
phrasal verb thrash out or
overTo speak together and exchange ideas and opinions about:
bandy (about), discuss, moot, talk over, thresh out (or over), toss around. (Informal) hash (over), kick around, knock about (or around). (Slang) rap3. Idiom: go into a huddle. See words
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