nocturnal

word

Definition

Active during the night or happening at night. Usually describes animals or events that occur after dark.

Usage & Nuances

'Nocturnal' is formal and often used in scientific contexts, especially biology. Common with animals (nocturnal animals, nocturnal habits). Opposite is 'diurnal' (active in day). Not used for people unless for emphasis or in a literary way.

Example Sentences

Owls are nocturnal animals.

basic

The bat is a nocturnal creature.

basic

Some flowers have a nocturnal bloom and open only at night.

basic

He's naturally nocturnal and loves working late into the night.

natural

A lot of big cities have a nocturnal energy that you just don't feel during the day.

natural

Unlike most birds, the owl is strictly nocturnal.

natural