You might be confusing the word incest with incest. These words are commonly misused.

Pronunciation change

Pronunciation change

Noun change

Singular
incest

Plural
none

  1. (uncountable) Incest is the act of having sex with a close relative, like your sibling or your parent. Sex with your first cousin is also usually considered incest. Incest is taboo and illegal in most places.

Related words change