Definition of incestuous adjective from the Oxford Advanced American Dictionary

     

    incestuous

     adjective
    adjective
    NAmE//ɪnˈsɛstʃuəs//
     
     
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  1. 1 involving sex between two people in a family who are very closely related an incestuous relationship
  2. 2(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.
incestuously
 
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adverb
See the Oxford Advanced Learner's Dictionary entry: incestuous