DIURNAL Synonyms: 73 Similar and Opposite Words

diurnal 1 of 2

adjective

dī-ˈər-nᵊl

Definition of diurnal

as in daily

occurring, done, produced, or appearing every day a love as constant and certain as the diurnal tides

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Antonyms & Near Antonyms

diurnal

2 of 2

noun

as in periodical

a publication that appears at regular intervals a collection of diurnals containing essays by preeminent 19th-century American writers and thinkers

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of diurnal

Adjective

During its 12-day journey, SE2 completed one full day-night diurnal cycle over New Mexico and three consecutive diurnals off the Brazilian coast. — Chris Young, Interesting Engineering, 14 Apr. 2026 Overnight lows will drop into the low 40s under clear skies, marking a 30-degree diurnal swing in some spots. — Senior Newsroom Meteorologist, San Francisco Chronicle, 3 Feb. 2026 This doubling of the diurnal might happen once a year. — Lauren Bostwick, CBS News, 18 Jan. 2026 The watery and stable microclimate within the caves long ago could have hosted microbial colonies, and today the caves are protected from the extreme conditions on Mars' surface, such as wildly different diurnal temperatures, dust storms and solar ultraviolet and cosmic-ray radiation. — Keith Cooper, Space.com, 24 Nov. 2025 See All Example Sentences for diurnal

Recent Examples of Synonyms for diurnal

Adjective

Policy Daily on Energy is a daily briefing for policy professionals and others following energy and environmental issues.

— Washington Examiner, The Washington Examiner, 17 Oct. 2026
This individual asset is often referred to as zest, and it can be purposefully developed to assist us in managing daily stressors as well as creating meaningful lives.

— Joan M. Cook, Time, 17 Oct. 2026

Definition of daily

Noun

Declonius Peck, its beloved editor-in-chief, has gone to prison for embezzlement, and his evil twin, Salton, has assumed management of the family business, along with the 39 editors who curate the periodical.

— Leigh Haber, Los Angeles Times, 13 Oct. 2026
When word spread that the Chief Librarian of the Army was paying a visit, soldiers rushed to request their favorite periodicals and book genres.

— Literary Hub, Literary Hub, 8 Oct. 2026

Definition of periodical

Noun

This week, Baylor’s student newspaper reported that the school’s enrollment of 13,860 undergraduates is BU’s lowest in 12 years.

— Fort Worth Star-Telegram, Fort Worth Star-Telegram, 17 Oct. 2026
As more magazines and newspapers and animation studios have gone out of business, more artists have turned to children’s publishing for work.

— Literary Hub, Literary Hub, 16 Oct. 2026

Definition of newspaper

Noun

The researchers published the findings in the journal Physical Review Letters.

— Ameya Paleja, Interesting Engineering, 19 Oct. 2026
The opening event, which included a 3,000-drone performance, wellness events such as sound healing, journal customization, aura photography and fashion sketches, was attended by global ambassador Jisoo and models Ming Xi and Stella Maxwell.

— Denni Hu, Footwear News, 18 Oct. 2026

Definition of journal

Noun

Eventually, in 1914, Jo succeeded in publishing Vincent’s letters in an ambitious three-volume book, which today is considered one of the most revealing and important works of art history.

— Joan Martelli, Time, 17 Oct. 2026
Students, working-class people, artists, local neighborhood families, musicians and people from all walks of life who simply love books and reading.

— Marc Weingarten, Los Angeles Times, 17 Oct. 2026

Definition of book

Browse Nearby Words

ditzy

diurnal

diurnals

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“Diurnal.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/diurnal. Accessed 21 Oct. 2026.

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Synonyms of diurnal

adjective

noun

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