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⇱ incestuous - WordReference.com Dictionary of English


incestuous

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ɪnˈsɛstʃuəs/US:USA pronunciation: IPA and respellingUSA pronunciation: IPA/ɪnˈsɛstʃuəs/ ,USA pronunciation: respelling(in sescho̅o̅ əs)


WordReference Random House Unabridged Dictionary of American English © 2026
in•ces•tu•ous  (in sescho̅o̅ əs),USA pronunciation adj. 
  1. Medicine, Anthropology, Sociologyinvolving incest.
  2. Sociology, Lawguilty of incest.
  3. being so close or intimate as to prevent proper functioning:an incestuous relationship between organized crime and government.
  • Late Latin incestuōsus, equivalent. to Latin incestu- stem of incestus incest + -ōsus -ous
  • 1525–35
in•cestu•ous•ly, adv. 
in•cestu•ous•ness, n. 

Collins Concise English Dictionary © HarperCollins Publishers::
incestuous /ɪnˈsɛstjʊəs/ adj
  1. relating to or involving incest: an incestuous union
  2. guilty of incest
  3. resembling incest in excessive or claustrophobic intimacy
inˈcestuously adv inˈcestuousness n
WordReference Random House Learner's Dictionary of American English © 2026
in•cest /ˈɪnsɛst/USA pronunciation   n. [uncountable]
  1. Sociologysexual relations between persons so closely related that they are forbidden to marry.
in•ces•tu•ous /ɪnˈsɛstʃuəs/USA pronunciation  adj. 

WordReference Random House Unabridged Dictionary of American English © 2026
in•cest  (insest),USA pronunciation n. 
  1. Medicine, Anthropology, Sociologysexual intercourse between closely related persons.
  2. Medicine, Sociology, Lawthe crime of sexual intercourse, cohabitation, or marriage between persons within the degrees of consanguinity or affinity wherein marriage is legally forbidden.
  • Latin incestus (noun, nominal) sexual impurity, derivative of incestus (adjective, adjectival) profane, sexually impure (in- in-3 + -cestus combining form of castus chaste), by analogy with verb, verbal nouns derived with -tus
  • Middle English 1175–1225

'incestuous' also found in these entries (note: many are not synonyms or translations):
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