firstborn

adjective

first·​born ˈfərs(t)-ˈbȯrn How to pronounce firstborn (audio)
: first brought forth : eldest
firstborn noun

Examples of firstborn in a Sentence

Recent Examples on the Web
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His firstborn carried his name and came the closest to duplicating his success in the ring. Preston Fore, Fortune, 7 July 2025 Osaka also vowed to get back to tennis after welcoming her firstborn. Kayla Grant, People.com, 2 July 2025 Korean men, especially firstborn sons like Lee, face pressure to be successful in their careers and provide for their families. Brittney Melton, NPR, 8 June 2025 The sign explained that the couple's firstborn is named Carter and asked the singer to help with the gender reveal of their second child. Mekishana Pierre Published, EW.com, 29 May 2025 See All Example Sentences for firstborn

Word History

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of firstborn was in the 14th century

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Cite this Entry

“Firstborn.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/firstborn. Accessed 18 Jul. 2025.

Kids Definition

firstborn

adjective
first·​born ˈfərs(t)-ˈbȯ(ə)rn How to pronounce firstborn (audio)
: born first : eldest
firstborn noun

More from Merriam-Webster on firstborn

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