How do you describe someone who is into incest?
Solution 1:
Incestuous (adj): (the noun is incestuousnesses)
- adj. Of, involving, or suggestive of incest.
- having committed incest.
- Someone who commits incest is the more common way to refer to an incestuous person.
A less common term is incestophile according to Wikipedia:
- A person who engages in incest is called an incestophile.