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inbred (comparative more inbred, superlative most inbred)

  1. Bred within; innate.
    • 1899, Kenneth Grahame, The Golden Age/A White-washed Uncle
      We who from daily experience knew Miss Smedley like a book—were we not only too well aware that she had neither accomplishments nor charms—no characteristic, in fact, but an inbred viciousness of temper and disposition?
    • 1666, John Bryden, Annus Mirabilis: The Year of Wonders
      His cold experience tempers all his heat, And inbred worth doth boasting valour slight.
  2. (often derogatory) Having an ancestry characterized by inbreeding.
  3. (genetics) Describing a strain produced through successive generations of inbreeding resulting in a population of genetically identical individuals which are homozygous at all genetic loci.


  • (bred within): inborn, indigenous; See also Thesaurus:innate
  • (having an ancestry characterized by inbreeding):
  • (of a population of genetically identical individuals):




  1. simple past tense and past participle of inbreed
    • 1920, Chesla Clella Sherlock, Care and Management of Rabbits Chapter 3
      People discovered that the Belgian hare of those days was a very delicate animal and that it was subject to many diseases. It had been inbred so long in order to produce show animals that its vitality was nearly gone.


inbred (plural inbreds)

  1. (vulgar) An inbred individual.
    Since you all marry your cousins I bet you're a bunch of inbreds.