\ ˈsī(-ə)r How to pronounce sire (audio) \

Definition of sire

 (Entry 1 of 2)

1a : father
b archaic : male ancestor : forefather
2a archaic : a man of rank or authority especially : lord used formerly as a form of address and as a title
b obsolete : an elderly man : senior
3 : the male parent of an animal and especially of a domestic animal


sired; siring

Definition of sire (Entry 2 of 2)

transitive verb

1 : beget used especially of male domestic animals
2 : to bring into being : originate

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Synonyms for sire

Synonyms: Noun

dad, daddy, father, old man, pa, papa (also poppa), pater [chiefly British], pop

Synonyms: Verb

beget, father, get

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Examples of sire in a Sentence


his sire had been a renowned Wall Street lawyer the revered sire of the impressionist movement in art


The horse sired several champion racers. the champion racehorse went on to sire a long line of winners
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Recent Examples on the Web: Noun

Tacitus, Intrepid Heart and Bourbon War are sons of Tapit, the sire of the past three Belmont Stakes winners who weren't also Triple Crown champions -- Tonalist in 2014, Creator in 2016 and Tapwrit in 2017. Mark Inabinett |,, "Rewinding the Belmont Stakes 2019: Sir Winston wins," 8 June 2019 The favorite is Tacitus, whose father is the legendary sire Tapit; second-favorite is War of Will, who won the Preakness. Bay Area News Group, The Mercury News, "What time is the Belmont Stakes?," 8 June 2019 Ryan estimated over 10,000 people have ventured to Ashford Stud to see American Pharoah, who is paraded in front of a statue of sire Giant’s Causeway for onlookers who take the 3 p.m. tour Monday through Friday. Fletcher Page, The Courier-Journal, "American Pharoah has how many foals? Triple Crown winner keeps winning," 31 May 2018 Now, these sires will face-off in a head-to-gorgeous-head competition. Danielle Mcnally, Marie Claire, "Welcome to March Dadness," 22 Mar. 2019 For a dog to be registered with the AKC, documentation must be shown going back three generations on both the sire’s and the dam’s sides of the family. Liz Cantrell, Town & Country, "How Queen Elizabeth Was Fooled by a Fake Purebreed Dog," 18 Sep. 2018 His sire, Medaglia d'Oro, led all stallions in North America by producing seven Grade 1 winners in 2017. Neil Greenberg,, "2018 Kentucky Derby post draw, odds and picks: Everything you need to know," 1 May 2018 In one way excruciatingly detailed by the Times, however, Mr. Trump and his sire are nothing new under the sun. WSJ, "Dogs Bite Men and Trumps Duck Taxes," 5 Oct. 2018 The good news is that there are some promising new sires. Eric Sondheimer,, "Racing! New stallions try to give a boost in California," 2 July 2018

Recent Examples on the Web: Verb

That has clearly been proven in tragic cases in which fertility doctors misled patients about their donor’s identity, even using their own sperm to sire dozens of children. Beth Mole, Ars Technica, "Sperm donor #2757 sired at least 45 kids—now they’re connecting online," 13 Sep. 2018 The males who were most attentive to infants sired five times more children than the least attentive. Alison Gopnik, WSJ, "For Gorillas, Being a Good Dad Is Sexy," 30 Nov. 2018 As the Post points out, that could allow for one donor to sire more than 10,000 children across the entire country. Beth Mole, Ars Technica, "Sperm donor #2757 sired at least 45 kids—now they’re connecting online," 13 Sep. 2018 Sperm donors in Taiwan can only sire one child, for instance. Beth Mole, Ars Technica, "Sperm donor #2757 sired at least 45 kids—now they’re connecting online," 13 Sep. 2018 Completing the stakes program is the $100,000 Bertrando Stakes for 3-year-olds and up bred or sired in California. John Cherwa,, "Racing! It’s post time at Los Alamitos," 28 June 2018 In a tsunami of bad news for the President just on Thursday, it was reported that the National Enquirer's parent company had paid off a doorman at one of his properties to keep quiet a rumor that the President had sired an illegitimate child. Stephen Collinson, CNN, "Comey paints unsparing portrait of Trump in devastating tell-all book," 13 Apr. 2018 By killing cubs that aren’t his, the male forces the female back into estrus, allowing him to mate and sire cubs of his own. Doug Main, National Geographic, "Why These Leopard Sisters Are Mating With the Same Male," 27 June 2018 In this strange world, males are fatherless and sire no sons. Katherine J. Wu, Smithsonian, "Five Real Life Wasp Superpowers Not in Ant-Man and the Wasp," 22 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sire.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of sire


13th century, in the meaning defined at sense 1a


1611, in the meaning defined at sense 1

History and Etymology for sire


Middle English, from Anglo-French, lord, feudal superior, from Vulgar Latin *seior, alteration of Latin senior older — more at senior

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Statistics for sire

Last Updated

15 Jun 2019

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Time Traveler for sire

The first known use of sire was in the 13th century

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More Definitions for sire



English Language Learners Definition of sire

 (Entry 1 of 2)

used formerly to address a man of rank or authority (such as a king or lord)
technical : a male parent of some animals (such as dogs and horses)



English Language Learners Definition of sire (Entry 2 of 2)

of an animal : to become the father of (an animal)
old-fashioned : to become the father of (a child)


\ ˈsīr How to pronounce sire (audio) \

Kids Definition of sire

 (Entry 1 of 2)

1 often capitalized : father entry 1 sense 1
2 : the male parent of a domestic animal
3 used in the past to address a man of rank (as a king) Your horses are ready, sire.


sired; siring

Kids Definition of sire (Entry 2 of 2)

: to become the father of


\ ˈsī(ə)r How to pronounce sire (audio) \

Medical Definition of sire

 (Entry 1 of 2)

: the male parent of an animal and especially of a domestic animal
sired; siring

Medical Definition of sire (Entry 2 of 2)

: to procreate as the male parent of

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More from Merriam-Webster on sire

Rhyming Dictionary: Words that rhyme with sire

Thesaurus: All synonyms and antonyms for sire

Spanish Central: Translation of sire

Nglish: Translation of sire for Spanish Speakers

Britannica English: Translation of sire for Arabic Speakers

Comments on sire

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a tendency to relapse

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