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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Queen of Hearts and The Girl with the Needle actress Trine Dyrholm co-stars a woman estranged from children who turns up uninvited at a weekend-long naming party for her son’s firstborn child at a luxury season resort. Melanie Goodfellow, Deadline, 11 June 2026 The first signs that their firstborn son was different came early. Quanta Magazine, 8 June 2026 However, Johansen, on occasion, shares glimpses into motherhood with sweet photos of herself pushing her firstborn in a stroller on social media. Skyler Caruso, PEOPLE, 3 June 2026 Her firstborn, Emma, shared some of the performer’s words of wisdom in a joint virtual appearance with the Mary Poppins star on The Kelly Clarkson Show in 2020. Bailey Bujnosek, InStyle, 30 May 2026 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 Jun. 2026.

Kids Definition

firstborn

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

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