ASSIDUOUSNESS Synonyms: 28 Similar and Opposite Words

assiduousness

noun

Definition of assiduousness

as in diligence

attentive and persistent effort with painstaking assiduousness investigators finally cracked the case of the stolen works of art

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Recent Examples of Synonyms for assiduousness

Noun

Agents can take a whole task from start to finish, such as diligence on a deal or discovery in a dispute.

— Max Junestrand, Fortune, 22 Oct. 2026
Taken together, these two mistakes represented an almost-unfathomable breach of basic diligence.

— Daniel Duane, New York Times, 14 Oct. 2026

Definition of diligence

Noun

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

Definition of assiduity

Noun

Additionally, the workers must hand over any communications — including self-deleting texts from apps such as Signal — related to the office’s efforts to block noncitizen voting.

— Sonja Sharp, Los Angeles Times, 31 Oct. 2026
The work is part of a broader effort to understand how eVTOL aircraft can share airspace and infrastructure with conventional aircraft while meeting aviation safety requirements.

— Neetika Walter, Interesting Engineering, 31 Oct. 2026

Definition of effort

Noun

Have the confidence to walk away For founders, persistence is often celebrated, but knowing when to stop investing in a business can be just as important as having the conviction to start one.

— Amy Francombe, Vogue, 3 Nov. 2026
The persistence of these differences beyond the pandemic points to chronic disease, not Covid-19 alone, as a key component of the political mortality divide.

— Brandon Yan, STAT, 3 Nov. 2026

Definition of persistence

Noun

The idea is bold and likely would face legislative hurdles and industry opposition before becoming law.

— Stephen Hobbs, Sacbee.com, 4 Nov. 2026
Donalds, 48, who spent most of his career in the finance industry, has served two terms in Congress and two terms in the Florida House.

— Catherine Welch, NPR, 4 Nov. 2026

Definition of industry

Noun

Or is that simply naivete borne of the American myth that our candidates’ attentiveness extends beyond the ballot box and endures long after Election Day?

— Chicago Tribune, Chicago Tribune, 1 Nov. 2026
Next-level attentiveness from friendly staff certainly helps.

— Condé Nast, Condé Nast Traveler, 8 Oct. 2026

Definition of attentiveness

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assiduously

assiduousness

assign

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“Assiduousness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/assiduousness. Accessed 5 Nov. 2026.

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Synonyms of assiduousness

noun

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