incestuousness

/ɪnˈsɛstʃuəsnəs/
noun
  1. The quality or state of being too close or overly connected within a small group, often in a way that excludes outsiders.
    • The incestuousness of the film industry can make it difficult for fresh talent to break in.
    • Critics pointed to the incestuousness of the board, where members all came from the same few families.
    • The incestuousness of the small town made it hard for newcomers to feel welcome.
  2. The condition of being involved in sexual relationships with close relatives.
    • Ancient myths often contain stories of incestuousness among the gods.
    • The novel explores the psychological effects of incestuousness within a royal family.
    • The documentary examined the genetic risks associated with incestuousness.