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
n.
(道德或艺术上的)衰落, 堕落, 颓废
The decadence of morals is bad for a nation.道德的堕落对国家是不利的。
英英词典释义
Noun
1. the state of being degenerate in mental or moral qualities