flail

1. V-T/V-I If your arms or legs flail or if you flail them about, they wave about in an energetic but uncontrolled way. 用力地胡亂揮動; 用力地胡亂擺動

His arms were flailing in all directions. 他的雙臂使勁地胡亂揮舞著。

2. PHRASAL VERB Flail around means the same as . 用力地胡亂揮動

He started flailing around and hitting Vincent in the chest. 他開始胡亂揮舞雙拳，打到了文森特的胸口。