incest

1. N-UNCOUNT Incest is the crime of two members of the same family having sexual intercourse, such as a father and daughter, or a brother and sister. 亂倫

Oedipus, according to ancient Greek legend, killed his father and committed incest with his mother. 據古希臘傳說，俄狄浦斯殺死了父親竝與母親亂倫。