ASSIDUITY Synonyms: 28 Similar and Opposite Words

assiduity

noun

ˌa-sə-ˈdü-ə-tē

Definition of assiduity

as in diligence

attentive and persistent effort this project has been successful only through the assiduity of a lot of people

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

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 assiduity While the Queen Mother was very fond of this Queen Victoria tiara and wore it with relative assiduity, her daughter only wore it once in public, on an official trip to Malta in November 2005. — Ana Serrano, Glamour, 7 Dec. 2025 These indestructible treasures have always been buried in matter, awaiting the invention of scanning electron microscopes and scientists with enough assiduity to spend decades on end peering into their atomic eyes. — Virginia Heffernan, WIRED, 21 Mar. 2023 Lee is hardly the first biographer to be wooed by the allure of her subject; to risk being squashed by the weight of her research; or to concede that, despite her assiduity, much will elude her grasp. — Anthony Lane, The New Yorker, 22 Feb. 2021

Recent Examples of Synonyms for assiduity

Noun

Both have done their diligence, and both believe in the company.

— Anas Bhairi, Forbes.com, 6 Nov. 2026
Regulations are changing too slowly and unevenly, as European policymakers have delayed some reporting and due-diligence requirements, while product and import rules continue to advance.

— Martino Carrera, Footwear News, 6 Nov. 2026

Definition of diligence

Noun

He was tapped into the Loop initiative earlier this year as part of Miami City Commissioner Ralph Rosado’s efforts to revive the dormant plans.

— Isabel Rivera, Miami Herald, 14 Nov. 2026
The Rangers’ effort was made even more remarkable by the return of quarterback Keaton Rose, who battled leukemia before making his way back under the Friday Night Lights.

— Ryan Hunt, Fort Worth Star-Telegram, 14 Nov. 2026

Definition of effort

Noun

By allowing advanced sonar capabilities to be deployed further forward and for extended periods of time, LDS significantly enhances operational persistence while reducing risks to personnel and high-value assets, as per the release.

— Prabhat Ranjan Mishra, Interesting Engineering, 8 Nov. 2026
The governor must be pleased that his persistence has earned him a place in the state’s history.

— Kevin Rennie, Hartford Courant, 8 Nov. 2026

Definition of persistence

Noun

Asphalt contractor Albert Santing, who has 28 years of experience in the industry, said the quieter operation improved working conditions on the Groningen project.

— Atharva Gosavi, Interesting Engineering, 11 Nov. 2026
Eisenberg, who has been in the restaurant industry for about 50 years, did not serve in the military.

— Susan Sarkauskas, Chicago Tribune, 11 Nov. 2026

Definition of industry

Browse Nearby Words

asseverations

assiduity

assiduous

See all Nearby Words

Cite this Entry

Style

“Assiduity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/assiduity. Accessed 15 Nov. 2026.

Copy Citation

Synonyms of assiduity

noun

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Word of the Day

lissome

Popular in Grammar & Usage

How to Use 'Who' vs. 'Whom'

31 Useful Rhetorical Devices

More Commonly Misspelled Words

Merriam-Webster’s Great Big List of Words You Love to Hate

'Affect' vs. 'Effect'

Popular in Wordplay

Great Big List of Beautiful and Useless Words, Vol. 5

9 Words That Sound Like Insults But Aren't

The Longest Long Words List

The Words of the Week - Nov. 13

Even More Bird Names that Sound Like Insults (and Sometimes Are)

Popular

How to Use 'Who' vs. 'Whom'

Great Big List of Beautiful and Useless Words, Vol. 5

9 Words That Sound Like Insults But Aren't

Games & Quizzes