sisterfucker

Etymology
.  /.

Noun

 * 1)  An extremely undesirable person.
 * 2)  One who engages in incestuous sex with their sister.
 * 1)  One who engages in incestuous sex with their sister.
 * 1)  One who engages in incestuous sex with their sister.
 * 1)  One who engages in incestuous sex with their sister.

Synonyms

 * sister humper
 * sister humper

Hypernyms

 * inbreeder
 * sibling fucker

Related terms

 * motherfucker
 * fatherfucker
 * brotherfucker
 * sisterfucking
 * sisterfuck