incestuous

a. guilty of incest,i.e. sexual intercoursebetween persons within degrees prohibited by law (The marriage of a man with his deceased brother’swife was regarded as incestuous by the Church inShakespeare’s time.) 犯乱伦罪的。
△ Ham.1.5.42:“Ay,that incestuous,that adulterate beast，”唉，正是那个乱伦通奸的畜生。