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1. A sound defeat
   - walloping, debacle, drubbing, slaughter, trouncing, whipping, hammering [informal], pasting [informal], débâcle, smackdown [N. Amer, informal], beatdown [N. Amer]
    
2. The act of inflicting corporal punishment with repeated blows
   - beating, licking, drubbing, lacing, trouncing, whacking, hiding [informal]

1. [informal] Beat thoroughly and conclusively in a competition or fight
   "We thrashed the other team on Sunday!";
   - cream [informal], bat, clobber [informal], drub, lick [informal], marmalise [Brit, informal], marmelize [Brit, informal], marmelise [Brit, informal], wipe the floor [informal], paste [informal], beat hollow [informal], whale [N. Amer, informal], marmalize [Brit, informal], smoke [N. Amer, informal], hammer [informal], muller [Brit, informal], blow away [informal], slaughter [informal], tromp [N. Amer, informal], trounce
    
2. Move or stir about violently
   "The feverish patient thrashed around in his bed";
   - convulse, thresh, thresh about, thrash about, slash, toss, jactitate
    
3. Beat hard and repeatedly, esp. with a whip, cane, etc.
   - thresh, lam [informal], flail
    
4. Dance the slam dance
   - slam dance, slam, mosh
    
5. Beat so fast that (the heart's) output starts dropping until (it) does not manage to pump out blood at all
    
6. Move data into and out of core rather than performing useful computation
   "The system is thrashing again!"
    
7. (farming) beat the seeds out of a grain
   - thresh

Derived forms: thrashings

Type of: agitate, beat, beat out, beat up, corporal punishment, crush, dance, defeat, licking, pound, shake, shell, swap, thump, trip the light fantastic, trip the light fantastic toe, trounce, vanquish, work over

Encyclopedia: Thrashing