1 ADJ-GRADED [usually ADJ n] (生活)放纵的，狂欢的，不羁的 If you say that someone has a riotous lifestyle, you mean that they frequently behave in a excessive and uncontrolled way, for example by eating or drinking too much. (生活)放纵的，狂欢的，不羁的 [formal]
SYN reckless, wild, outrageous, lavish
2 ADJ-GRADED [usually ADJ n] (行为或事件)狂欢的，喧闹的，放纵的 You can describe someone's behaviour or an event as riotous when it is noisy and lively in a rather wild way. (行为或事件)狂欢的，喧闹的，放纵的
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The dinner was often a riotous affair enlivened by superbly witty speeches.
宴会常常会因为一些非常诙谐的讲话而气氛活跃，热闹非凡。
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...a riotous exhibition of boogie-woogie piano playing.
欢闹的布吉乐钢琴演奏会
SYN unrestrained, wild, loud, noisy
3 ADJ [ADJ n] 色彩丰富的;五颜六色的;装饰华丽的 You can describe things as riotous when they are very colourful or decorative rather than plain or simple. 色彩丰富的;五颜六色的;装饰华丽的
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