rough (behaviour, temperament, etc.); wild; rude; violent
粗暴な振る舞いは周囲を不快にさせる。
Rough behavior makes those around uncomfortable.
彼の粗暴な言動が問題視されている。
His rough words and actions are being regarded as a problem.
粗暴な態度を改めるよう注意を受けた。
He was warned to correct his violent attitude.