Simple Definition of incestuous
: involving sexual intercourse between closely related people : involving incest
Full Definition of incestuous
1 : constituting or involving incest
2 : guilty of incest
3 : excessively or improperly intimate or exclusive <mainstream fashion magazines have an incestuous relationship with advertisers — Guy Trebay>
Examples of incestuous in a sentence
There were rumors that the father and daughter had had an incestuous relationship.
First Known Use of incestuous
Seen and Heard
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