Definition of

Incest

  1. (noun, act) sexual intercourse between persons too closely related to marry (as between a parent and a child)

via WordNet, Princeton University

Alternate forms of Incest

Derivations: incestuous

Hypernyms: criminal congress, unlawful carnal knowledge

Origin of the word Incest

  1. early 13c., "the crime of sexual intercourse between near kindred," from L. incestum "unchastity," also specifically "sex between close relatives," noun use of neut. adj. incestus "unchaste, impure," from in- "not" + castus "pure" (see caste). In early use also in ref. to sexual relations or marriage with one under a vow of chastity (sometimes distin… more

via Online Etymology Dictionary, ©2001 Douglas Harper

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