- 1[intransitive, transitive] flail (something) (about/around) to move around without control; to move your arms and legs around without control The boys flailed around on the floor. He was running along, his arms flailing wildly.
- 2[transitive] flail somebody/something to hit somebody/something very hard, especially with a stick Word Origin Old English, of West Germanic origin, based on Latin flagellum
BrE BrE//fleɪl//; NAmE NAmE//fleɪl//Verb Forms present simple I / you / we / they flail
BrE BrE//fleɪl//; NAmE NAmE//fleɪl//he / she / it flails
BrE BrE//fleɪlz//; NAmE NAmE//fleɪlz//past simple flailed
BrE BrE//fleɪld//; NAmE NAmE//fleɪld//past participle flailed
BrE BrE//fleɪld//; NAmE NAmE//fleɪld//-ing form flailing
BrE BrE//ˈfleɪlɪŋ//; NAmE NAmE//ˈfleɪlɪŋ//