incestuous
adj. 乱伦的；血亲相奸的；犯乱伦罪的
例句
The music industry is an incestuous business.
音乐界是一个封闭的行业。
《牛津词典》
Its inhabitants are a close and incestuous bunch.
该地居民紧密抱团，狭隘排外。
《柯林斯英汉双解大词典》
They accused her of an incestuous relationship with her father.
他们指控她与父亲有乱伦关系。
