Definition of incest in English:


Line breaks: in¦cest
Pronunciation: /ˈɪnsɛst


[mass noun]
  • 1Sexual relations between people classed as being too closely related to marry each other.
    More example sentences
    • We also show incest avoidance between closely related kin, as well as the influence of other factors on paternity in males.
    • The theme of incest and sexual abuse is, unfortunately, a common one throughout the book.
    • There are also scenes of fighting, murder, incest, oral sex and cross-dressing.
  • 1.1The crime of having sexual intercourse with a parent, child, sibling, or grandchild.
    More example sentences
    • Sexual crimes include all forms of adultery, incest, and forbidden intercourse with a Jewish woman.
    • At the moment, incest covers not simply sexual intercourse but any form of sexual connection.
    • As a result, rape in the home, with the exception of incest, is almost never punished.


Middle English: from Latin incestus, incestum 'unchastity, incest', from in- 'not' + castus 'chaste'.

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