incestuous
adjective/ɪnˈsestʃuəs/
/ɪnˈsestʃuəs/
- involving sex between two people in a family who are very closely related
- an incestuous relationship
- (disapproving) involving a group of people who have a close relationship and do not want to include anyone outside the group
- The music industry is an incestuous business.
Word Originearly 16th cent.: from late Latin incestuosus, from Latin incestus, incestum ‘unchastity, incest’, from in- ‘not’ + castus ‘chaste’.
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incestuous