Thesaurus.com
Dictionary.com
Definitions

night owl

[nahyt oul] / ˈnaɪt ˌaʊl /
ADJECTIVE
dissolute
Synonyms
WEAK
abandoned corrupt debauched degenerate depraved dissipated evil fast fast and loose gone bad high living in the fast lane intemperate lascivious lax lecherous lewd libertine licentious light loose nighthawk on the take open player profligate raffish rakish reprobate slack swift sybaritic unconstrained unprincipled unrestrained vicious wanton wayward wicked wild
Antonyms
WEAK
chaste good moral pure resolute respectful virtuous
NOUN
playboy
Synonyms
STRONG
cat chaser killer operator philanderer player rake rounder speed sport swinger tomcat wolf womanizer
WEAK
gay dog heavy hitter ladies' man lady-killer lover-boy make-out artist pleasure seeker whorehound
Antonyms
WEAK
playgirl

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“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

"Instead of being a morning lark you're going to become more of a night owl," Casement explained.

From Science Daily • Jan. 7, 2026

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

From Salon • Dec. 19, 2024

Rick Miramontez is both a night owl and an early bird.

From New York Times • Apr. 10, 2024

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

From "Ophie's Ghosts" by Justina Ireland