1. 堕落的;颓废的
If you say that a person or society is decadent, you think that they have low moral standards and are interested mainly in pleasure.

e.g. ...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
e.g. ...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

noun

1. a person who has fallen into a decadent state (morally or artistically)