incestualist

incestual +‎ -ist.

incestualist (plural incestualists)

1. (nonstandard, rare) One who engages in incest.
   • 2005, J Corvino, Homosexuality and the PIB Argument:

     Andrew Sullivan attacks the first premise by arguing that PIB and homosexuality are importantly different, because there are “constitutional” homosexuals, but not constitutional polygamists, “incestualists,” or “bestialists.”

   • 2005, Uncle Davey, Re: To those who CONTINUE to attack Dr Gastrich Group: talk.origins

     OK, Aaron, what about a parade of necrophiliac incestualists next to your front door every other weekend? Gonna tolerate that?

• incestual, inbreeder, incester, incestophile