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nocturnal

nocturnal

27 4.7
Active at night rather than during the day
  • adjective
  • /nɒkˈtɜrnəl/
translation icon : nocturno
  • The nocturnal habits of certain frogs make them more active when the sun goes down.
  • nocturnal animal
  • nocturnal habit
  • nocturnal activity

Light pollution harms billions of birds and nocturnal animals.

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Examples

  • Now scientists understand that moths are important nocturnal pollinators.

  • No, I'm nocturnal, which means I work at night, when you should be sleeping.

  • We're not all nocturnal you know!

  • "The cats are the worst; they are nocturnal by nature and extremely hard to locate.

    Fiction book (1992)
  • My sleep schedule is so bad I'm literally nocturnal at this point.

  • I mean, I guess it all makes sense with the possums being nocturnal, yeah.

  • Light pollution harms billions of birds and nocturnal animals.

  • The owl, a nocturnal creature, is best known for his wisdom and eating up small rodents.

  • Nocturnal and endangered, a marsupial mouse thought to be extinct until recently.

  • Quite a few of New Zealand's oldest bird species have nocturnal habits, cryptically camouflaged plumage, or both.

    Academic text (1990)

Antonyms

1 7.4

Active or awake during the day rather than at night

Compounds

1 8.7

A natural release of semen during sleep, often during a dream

How Nocturnal

nocturnal
27 4.7
crepuscular
  • Specialized
9.1
diurnal
1 7.4

Surface Forms

nocturnal positive

Morphology

nocturnal = noct + al

The element 'noct-' means 'night' (from Latin) and the suffix '-al' yields 'relating to night'; the meaning is fairly clear but the root form 'noct-' is not a standalone English word, so learners who only know the common English word 'night' may not transparently connect the parts.

Etymology

Nocturnal comes from the Latin root noct- and the word nox, meaning 'night'. So, nocturnal describes animals or events that are active or happen during the night rather than the day.