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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From Kourtney Kardashian's incredibly raw delivery of her firstborn and Rob Kardashian welcoming his daughter with Blac Chyna before their tumultuous relationship ended to Kylie Jenner's attempt at keeping her first pregnancy secret, there was never a dull moment with reality TV's royal family. Andrea Wurzburger, PEOPLE, 14 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 17 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

Last Updated: - Updated example sentences
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