1.
An ~ relationship is one involving sexual intercourse between two members of the same family, for example a father and daughter, or a brother and sister.
They accused her of an ~ relationship with her father.
ADJ
2.
If you describe a group of people as ~, you disapprove of the fact that they are not interested in ideas or people from outside the group.
Its inhabitants are a close and ~ lot...
ADJ disapproval