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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The two, who married in 2012, welcomed their firstborn son, Silas, in April 2015. Kimi Robinson, USA Today, 5 Jan. 2026 Marshall announced the anticipated arrival of her firstborn in March 2023, a rep confirming the news to PEOPLE. Michelle Lee, PEOPLE, 4 Jan. 2026 Scott’s firstborn, Ford, is a nickname. Leigh Scheps, Parents, 13 Dec. 2025 Jones had to call her mom and break the news that her firstborn child had cancer at just 24 years old. Alyce Collins, MSNBC Newsweek, 7 Dec. 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

Browse Nearby Words

Cite this Entry

“Firstborn.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/firstborn. Accessed 12 Jan. 2026.

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
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!