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Definitions

nocturnal

[nok-tur-nl] / nɒkˈtɜr nl /
ADJECTIVE
happening at night
Synonyms


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.

By mid-2016, impressed by OpenAI’s talent roster, Dario had joined the lab, staying up late into the night with the famously nocturnal Brockman training AI agents to solve videogames.

From The Wall Street Journal • Mar. 28, 2026

Symptoms of nocturnal seizures can include signs of sudden awakening with confusion, thrashing, violent movements, screaming, or waking up on the floor.

From BBC • Mar. 10, 2026

It follows 55-year-old Palestinian cab driver Hassan, played with warmth and subtlety by Ehab Salami, as he ferries passengers through the nocturnal streets of Berlin.

From Barron's • Feb. 21, 2026

I would wake earlier, but I think in a past life I was a two-toed sloth or something because I’m nocturnal and I move very slowly.

From Los Angeles Times • Dec. 12, 2025

Bait laid on the trail, the hog hunters waited for their quarry, which turned nocturnal in the hot weather.

From "The Underground Railroad: A Novel" by Colson Whitehead




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