done, occurring, or active at night, of or relating to the night

Formal and Informal Expressions of nocturnal

In different contexts, you can replace 'nocturnal' with suitable alternatives. In a more formal setting, 'nightly, night-time' is apt. In informal speech or writing, 'nighty, night owl' is a commonplace synonym.

nocturnal: Explore its Definition & Usage

nocturnal Definition

1done, occurring, or active at night
2of or relating to the night

Using nocturnal: Examples

Take a moment to familiarize yourself with how "nocturnal" can be used in various situations through the following examples!

Example
Owls are nocturnal birds.
Example
He has a nocturnal habit of staying up late.
Example
The nocturnal animals come out to hunt at night.
Example
She prefers to work during nocturnal hours.

nocturnal Synonyms and Antonyms

Synonyms for nocturnal

nightly
night-time
after-dark
late-night

Antonyms for nocturnal

Phrases with nocturnal

nocturnal emission
an involuntary ejaculation of semen that occurs during sleep
Example
He was embarrassed when he had his first nocturnal emission.
nocturnal animal
an animal that is active at night and sleeps during the day
Example
Bats are nocturnal animals.
nocturnal bird
a bird that is active at night and sleeps during the day
Example
Owls are nocturnal birds.

Origins of nocturnal

from Latin 'nocturnalis', from 'nox, noct-' meaning 'night'

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Summary: nocturnal in Brief

'Nocturnal' [nɒkˈtɜːnl] refers to activities or occurrences that happen at night. It is often used to describe animals that are active during the night, such as owls and bats. It can also refer to people who stay up late at night, like 'He has a nocturnal habit of staying up late.'