incest

The definition of incest is sex between close blood relatives.

(noun)

  1. An example of incest is a brother and sister having sex.
  2. An example of incest is an uncle molesting his five year old nephew.

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See incest in Webster's New World College Dictionary

noun

  1. sexual intercourse between persons too closely related to marry legally
  2. sexual molestation of a child or adolescent by a relative, esp. by a parent or other adult relative

Origin: ME < L incestum, moral sin, incest, neut. of incestus, unchaste < in-, not + castus, chaste: see caste

See incest in American Heritage Dictionary 4

noun
  1. Sexual relations between persons who are so closely related that their marriage is illegal or forbidden by custom.
  2. The statutory crime of sexual relations with such a near relative.

Origin:

Origin: Middle English

Origin: , from Latin incestum

Origin: , from

Origin: neuter of incestus, impure, unchaste

Origin: : in-, not; see in-1

Origin: + castus, pure, chaste; see kes- in Indo-European roots

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