- 1[transitive] thrash somebody/something to hit a person or an animal many times with a stick, etc. as a punishment synonym beat
- 2[intransitive, transitive] to move or make something move in a violent or uncontrolled way thrash (about/around) Someone was thrashing around in the water, obviously in trouble. The animal thrashed about in pain. thrash something (about/around) A whale was thrashing the water with its tail. She thrashed her head from side to side.
- 3 [transitive] thrash somebody/something (informal) to defeat someone very easily in a game The Flyers thrashed the Islanders 5–1. compare whip Phrasal Verbsthrash somethingout
NAmE//θræʃ//Verb Forms present simple I / you / we / they thrash
he / she / it thrashes
past simple thrashed
-ing form thrashing