Word.ws English Dictionary

Synonyms of diurnal

3 similar words · 3 opposite words

Another word for diurnal is circadian. Other synonyms of diurnal are daily and daytime. The opposite of diurnal is nocturnal.

Synonyms and similar words for diurnal

adjectiveHaving a daily cycle that is completed every 24 hours, usually referring to tasks, processes...

  • circadianOf, relating to, or showing rhythmic behaviour with a period of approximately 24 hours; especially of a biological...

adjectiveMore synonyms

Opposite of diurnal

adjectiveAntonym(s) of “happening or active during the day”.

  • nocturnalOf a person, creature, group, or species, primarily active during the night.
  • nightly

adjectiveMore antonyms

Meaning of diurnal

  1. adjective Happening or occurring during daylight, or primarily active during that time.
  2. adjective Said of a flower that is open, or releasing its perfume during daylight hours, but not at night.
  3. adjective Having a daily cycle that is completed every 24 hours, usually referring to tasks, processes, tides, or sunrise to sunset; circadian.

Full definition of diurnal

diurnal in other languages

Questions about synonyms of diurnal

What is another word for diurnal?
Diurnal has 3 synonyms on Word.ws, such as circadian, daily and daytime.
What is the opposite of diurnal?
The opposite of diurnal is nocturnal.
What does diurnal mean?
Diurnal means happening or occurring during daylight, or primarily active during that time.

Source and license

Adapted from Wiktionary: diurnal (page history and authors) and the entries of the words listed. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped the synonyms and antonyms by meaning and added links. Wiktionary data of 2026-09-02.

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Cite this page: “Synonyms of diurnal.” Word.ws, https://word.ws/synonyms/diurnal. Based on Wiktionary, CC BY-SA 4.0.