licentiousness
n. 放荡;放肆
If you describe a person as licentious, you mean that they are very immoral, especially in their sexual behaviour.
...alarming stories of licentious behaviour.
关于放荡淫乱行为的骇人听闻的故事
1. the quality of being lewd and lascivious
2. dissolute indulgence in sensual pleasure