If you say that a person or society is decadent, you think that they have low moral standards and are interested mainly in pleasure.
例句
...restrictions on the number of decadent western films that were allowed to be shown.对颓靡的西方电影在上映数量上的限制...the excesses and stresses of their decadent rock 'n' roll lifestyles.他们颓废的摇滚生活的种种放浪及层层重压
英汉词典释义
adj.
堕落的;颓废的
a decadent society堕落的社会Don’t let decadent ideas eat into yourselves.别让腐朽的思想侵蚀你。
英英词典释义
Noun
1. a person who has fallen into a decadent state (morally or artistically)
Adjective
1. marked by excessive self-indulgence and moral decay;
"a decadent life of excessive money and no sense of responsibility""a group of effete self-professed intellectuals"