adj.暴乱的；狂欢的；放荡的；茂盛的
He was charged with riotous behaviour. 他被控聚众闹事。
We spent a riotous night at Christmas. 圣诞节我们度过了一个狂欢之夜。
He was expelled from college for riotous conduct. 他因行为放荡而被勒令退学。
