inbreeding

IPA/ˈɪnbriːdɪŋ/
KK[ˌɪnbrˈidɪŋ]IPA/ˈɪnbriːdɪŋ/

inbreeding — noun

1. the practice of producing offspring by mating animals, plants, or people that ar

1.nounB2
Definition

the practice of producing offspring by mating animals, plants, or people that are genetically close, such as siblings or parents and their children

Example

Mei-Lin adopted a rescue dog with health problems caused by generations of inbreeding.

caused by [noun phrase] — passive pattern showing consequence

When the park's wolf population dropped, inbreeding became a growing concern for Dr. Emeka.

Common collocations
  • avoid inbreeding
  • risk of inbreeding
  • inbreeding depression
  • generations of inbreeding
  • problems caused by inbreeding
Synonyms
  • linebreeding

    a gentler, more selective form of inbreeding used in animal breeding to preserve desirable traits without mating very close relatives

  • interbreeding

    broader term that can also mean mating between different groups or species; not limited to close relatives

  • consanguinity

    refers to the state of being blood-related, not the act of breeding; more formal and legal in tone

Antonyms
  • outbreeding

    mating between unrelated or distantly related individuals, promoting genetic diversity

  • crossbreeding

    mating between different breeds or varieties, producing hybrid offspring

Usage Note

Frequently used in formal, scientific, or agricultural contexts such as genetics, animal breeding, and conservation biology. Usually uncountable.

Common Mistakes

Inbreeding describes when two different dog breeds are crossed.
Inbreeding describes mating between closely related individuals of the same breed.
Crossing different breeds is crossbreeding, not inbreeding.
Inbreeding only happens in royal human families.
Inbreeding can occur in any population of animals, plants, or people where relatives mate.
Inbreeding is a biological concept that applies to all living things.

Word family

  • inbreed
    verbC1
  • inbred
    adjectiveC1

Synonym discussion

Sense: noun/1

Inbreeding is the general term for mating between close relatives such as siblings or parents and offspring. Linebreeding is a milder, more controlled form of inbreeding used by animal breeders to fix specific traits while avoiding extreme close pairings — it keeps the gene pool narrow but not as narrow as full sibling mating. Interbreeding is broader and can refer to any mixing of genetic material, including between different species (hybridisation); it does not necessarily involve relatives. Consanguinity is a more formal, non-breeding term meaning the state of being blood-related — you might see it in legal or medical contexts such as 'consanguinity laws' that restrict marriage between cousins. In everyday discussion of genetics and animal husbandry, inbreeding is the most commonly used word of the four.

inbreeding ↗linebreeding ↗interbreeding ↗consanguinity ↗

Common collocations

Nouns

Adverbs

Phrases

  • risk of inbreeding
  • generations of inbreeding
  • signs of inbreeding

Prepositions

Etymology

EnglishEnglish

The word inbreeding was formed in English around the 1840s by joining the prefix in- (meaning 'within' or 'among') with the noun breeding (the process of producing young). It first appeared in agricultural and animal husbandry writing, where farmers described mating animals from the same family line. The prefix in- here marks the direction of the pairing — within the same family group — rather than the more familiar use of in- to mean 'not' (as in inactive).