firstborn

adjective

first·​born ˈfərs(t)-ˈbȯrn 

: first brought forth : eldest

firstborn noun

Examples of firstborn in a Sentence

Recent Examples on the Web

Liechtenstein’s royal house has ended centuries of male-only succession, moving to absolute primogeniture so future firstborn daughters can inherit the Alpine principality’s throne. — Geir Moulson, Los Angeles Times, 15 Aug. 2026

The firstborn son of Jon Voight and the late actress Marcheline Bertrand, Haven shares Jolie’s passion for film, human rights and family. — Jessica Sager, PEOPLE, 7 Aug. 2026

Tiffany reports that the intrepid young Vickie, Martin’s firstborn and co-investigator, had a ready explanation for her mother’s surprising equanimity in the face of public scorn. — Jessica Winter, New Yorker, 6 Aug. 2026

Wise will play Anaya Clarke-Reagan, the Clarke family’s firstborn. — Rosy Cordero, Deadline, 6 Aug. 2026

Word History

First Known Use

14th century, in the meaning defined above

Rhymes for firstborn

• adorn
• airborne
• blackthorn
• broomcorn
• buckhorn
• buckthorn
• careworn
• foodborne
• forborne
• forewarn
• forlorn
• forsworn

Kids Definition

firstborn

adjective

first·​born ˈfərs(t)-ˈbȯ(ə)rn 

: born first : eldest

firstborn noun