breed
Americanverb (used with object)
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to produce (offspring); procreate; engender.
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to produce by mating; propagate sexually; reproduce.
Ten mice were bred in the laboratory.
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Horticulture.
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to cause to reproduce by controlled pollination.
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to improve by controlled pollination and selection.
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to raise (cattle, sheep, etc.).
He breeds longhorns on the ranch.
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to cause or be the source of; engender; give rise to.
Dirt breeds disease. Stagnant water breeds mosquitoes.
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to develop by training or education; bring up; rear.
He was born and bred a gentleman.
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Energy. to produce more fissile nuclear fuel than is consumed in a reactor.
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to impregnate; mate.
Breed a strong mare with a fast stallion and hope for a Derby winner.
verb (used without object)
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to produce offspring.
Many animals breed in the spring.
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to be engendered or produced; grow; develop.
Bacteria will not breed in alcohol.
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to cause the birth of young, as in raising stock.
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to be pregnant.
noun
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Genetics. a relatively homogenous group of animals within a species, developed and maintained by humans.
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lineage; stock; strain.
She comes from a fine breed of people.
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sort; kind; group.
Scholars are a quiet breed.
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Disparaging and Offensive. half-breed.
verb
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to bear (offspring)
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(tr) to bring up; raise
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to produce or cause to produce by mating; propagate
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to produce and maintain new or improved strains of (domestic animals and plants)
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to produce or be produced; generate
to breed trouble
violence breeds in densely populated areas
noun
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a group of organisms within a species, esp a group of domestic animals, originated and maintained by man and having a clearly defined set of characteristics
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a lineage or race
a breed of Europeans
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a kind, sort, or group
a special breed of hatred
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To produce or reproduce by giving birth or hatching.
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To raise animals or plants, often to produce new or improved types.
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Participles
Conjugated Forms
Present
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breedsimple
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breedssimple
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have bredperfect
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has bredperfect
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are breedingprogressive
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am breedingprogressive
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is breedingprogressive
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have been breedingperfect progressive
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has been breedingperfect progressive
Past
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bredsimple
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had bredperfect
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was breedingprogressive
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were breedingprogressive
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had been breedingperfect progressive
Future
Etymology
Origin of breed
before 1000; Middle English breden, Old English brēdan to nourish (cognate with Old High German bruotan, German brüten ); noun use from 16th century
Explanation
To breed is to have babies, whether you’re a human or a hermit crab. A breed is also a specific type of a domesticated species, like a poodle or Great Dane. The word breed comes from the Old English bredan which means to "bring young to birth," but also "cherish,” which is how most people feel about their offspring. Awwwww. But the fact is that breeding is reproducing. Also, a breed is a strain or stock of a species, such as a Siamese cat. There are many types of dog breeds, cow breeds, and even pig breeds. Members of a breed usually look and behave in a similar way.
Vocabulary lists containing breed
Word Generation Science - Life Science
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Genetics - Inheritance and Variation of Traits
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"A Modest Proposal," Vocabulary from the satire
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Lurie campaigned as a City Hall outsider, and much of the establishment contributed to his opponent, incumbent mayor London Breed.
From The Wall Street Journal • Mar. 30, 2026
By the summer of 2024, after the Supreme Court's ruling, then-Mayor London Breed, who was embroiled in a competitive race for re-election, said something had to be done.
From BBC • Aug. 22, 2025
A few weeks after the Supreme Court decision, then-San Francisco Mayor London Breed promised to be “very aggressive” in removing homeless encampments.
From Salon • Aug. 12, 2025
He persuaded his dad to buy him a microphone and an amplifier and, together with a friend Terry 'Geezer' Butler, formed a band called Rare Breed - which lasted for just two performances.
From BBC • Jul. 22, 2025
Other urgent and patriotic tasks that North Koreans have been urged to shoulder include “Let’s Breed More High-Yielding Fish!,”
From "Escape from Camp 14: One Man's Remarkable Odyssey from North Korea to Freedom in the West" by Blaine Harden
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
