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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Rudolph remembered of the early days with her firstborn. Hannah Sacks, PEOPLE, 17 Oct. 2025 The Washbergs were never going to accept a trailer-trash bride for their firstborn son, but for their gay son, any bride who wasn’t a groom would do. Amanda Whiting, Vulture, 8 Oct. 2025 Her firstborn, Sewell Setzer III died by suicide in 2024 at age 14 after an extended virtual relationship with a Character. Rhitu Chatterjee, NPR, 19 Sep. 2025 All new parents know that precious moments with your firstborn come in dribs and drabs and then in a torrent. Gil Kaufman, Billboard, 18 Sep. 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 28 Oct. 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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