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 son tragically passed away at just 10 weeks old in 2002. Emma Banks, InStyle, 11 Apr. 2026 Because their firstborn son had just died, and so that was horrific. Marc Weingarten, Los Angeles Times, 4 Apr. 2026 These included the death of the firstborn, turning the Nile into blood and locusts. Jose R. Gonzalez, AZCentral.com, 28 Mar. 2026 The impasto of time and experiences with the firstborn change how parents behave with subsequent children. Christine Smallwood, Harpers Magazine, 24 Mar. 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 23 Apr. 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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