newborn

American  

[noo-bawrn, nyoo-] / ˈnuˈbɔrn, ˈnyu- /

adjective

1. recently or only just born.

2. born anew; reborn.

   a newborn faith in human goodness.

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noun

plural

newborn, newborns

1. a newborn infant; neonate.

newborn British  

/ ˈnjuːˌbɔːn /

adjective

1. 1. recently or just born

   2. ( as collective noun; preceded by the )

      the newborn

2. (of hope, faith, etc) reborn

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Etymology

Origin of newborn

Middle English word dating back to 1250–1300; see origin at new, born

Explanation

A newborn is literally a baby animal (including us human animals) who was born in the past month. Figuratively, newborn describes anything recently born or created, like a newborn interest in vocabulary. Little babies are newborns until they're a month old — four weeks is the official human newborn cut-off age. Then they’re just regular ol’ babies. Other things can be newborn as long as they’re brand new — a newborn restaurant was opened recently, a newborn celebrity might be 18 but she just got famous. You could have a newborn fear if you recently became scared of something. Most newborns are not scary, though. (Unless you’re babysitting one.)

Example Sentences

She shared black-and-white photos of herself posing in a suit, heels and a white lace bralette and another photo of her newborn being bottle-fed.

From Los Angeles Times • Apr. 27, 2026

US media on Monday shared photos of the woman and her newborn, a baby girl.

From Barron's • Apr. 27, 2026

In simple terms, a supernova may have created two newborn neutron stars that quickly merged, producing a second explosion.

From Science Daily • Apr. 24, 2026

But she described her newborn as "purple" and unresponsive.

From BBC • Apr. 23, 2026

Lev finishes his morning prayers and folds the shawl as if handling a newborn baby.

From "What the Night Sings" by Vesper Stamper