乱伦 | luàn lún | to violate moral principles / depravity / (esp.) to commit incest / incest | |
扒灰 | pá huī | incest between father-in-law and daughter-in-law | |
爬灰 | pá huī | incest between father-in-law and daughter-in-law / also written 扒灰 | |
逆伦 | nì lún | unnatural relationship (parricide, incest etc) / unfilial conduct / against social morals |