as·​si·​du·​i·​ty ˌa-sə-ˈdü-ə-tē How to pronounce assiduity (audio)
plural assiduities
: the quality or state of being assiduous : diligence
: persistent personal attention
usually used in plural

Examples of assiduity in a Sentence

this project has been successful only through the assiduity of a lot of people
Recent Examples on the Web 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

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'assiduity.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1596, in the meaning defined at sense 1

Time Traveler
The first known use of assiduity was in 1596

Dictionary Entries Near assiduity

Cite this Entry

“Assiduity.” Dictionary, Merriam-Webster, Accessed 4 Dec. 2023.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!