night owl

American  

[nahyt aul] / ˈnaɪt ˌaʊl /

noun

Informal.

• night owls
  plural

1. a person who often stays up late at night; nighthawk.

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night owl British  

noun

1. informal a person who is or prefers to be up and about late at night

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night owl Idioms  

1. A person who habitually stays up late and is active at night, as in You can call her after midnight, for she's a night owl. This colloquial term, originally used in the late 1500s for an owl that is active at night, was transferred to nocturnal human beings in the mid-1800s.

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Other Word Forms

Noun Inflected Forms

• night owls
  plural

Etymology

Origin of night owl

First recorded in 1585–95

Example Sentences

See Examples For:

night owl

Meanwhile, variants associated with openness to experience and extraversion were connected with a greater tendency to be a night owl.

From Science Daily ● Sep. 8, 2026

Whether you're an early riser or a night owl will dictate what appeals more to you.

From BBC ● Jun. 13, 2026

“If you’re a night owl who wants to get stuff done and you try waking up at 5 a.m., you’ll last a week, and you’ll become self-defeated and depressed.”

From The Wall Street Journal ● Jan. 11, 2026

Mom was the consummate night owl, accomplishing her best work well after midnight.

From Salon ● Dec. 19, 2024

The woman was not, as Mama said, a lark, but more a night owl.

From "Ophie's Ghosts" by Justina Ireland