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Showing or characterized by persistent attention or untiring application: an assiduous worker who strove for perfection; did assiduous research before writing the book. See Synonyms at diligent.

[From Latin assiduus, from assidēre, to attend to : ad-, ad- + sedēre, to sit; see sed- in Indo-European roots.]

as·sid′u·ous·ly adv.
as·sid′u·ous·ness n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.assiduousness - great and constant diligence and attentionassiduousness - great and constant diligence and attention
industriousness, diligence, industry - persevering determination to perform a task; "his diligence won him quick promotions"; "frugality and industry are still regarded as virtues"
intentness, engrossment - the quality of being intent and concentrated; "the intentness of his gaze"
singleness - the quality of concentrating on one central objective; "his singleness of purpose"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


Steady attention and effort, as to one's occupation:
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
References in periodicals archive ?
This misgiving was lent credence by the unfortunate PR disaster of CS Macharia intimating development of Kisumu Port was conditional to the extension of SGR from Naivasha.But that is water under the bridge and assiduousness has won the day it is better to prepare Kisumu Port for future hinterland trade than retain its moribund state.
The contents of the letter run completely against the usual assiduousness, prudence and care that characterize the work habits of the Speaker.
Also, getting a national curriculum on Civic Education has been a serious challenge, but with the assiduousness of the team of dedicated workers at NCD, the nation of Sierra Leone can now boast of 'the Non-formal Curriculum for Civic Education in Sierra Leone'.
The assiduousness of some hospital officials to record tokens correctly and to update the information in the billets accordingly must have stemmed not only from their responsibility to take custody of the tokens (in addition to the children) but also from their recognition that by archiving these objects properly they were preserving the only threads linking parent to child.
"The term 'draft dodging' is a characterization that does not reflect any legal category, but rather somebody's view of the assiduousness and honesty with which a draft registrant seeks to avoid service," Michael Tigar, a professor of law emeritus at Duke Law School and the author of an analysis on the Selective Service System, ( told PolitiFact in 2015.
By giving the impression that the police want to take every case to trial, the department can promote its own reputation for assiduousness without having to do additional work.
Echoing other Robinsonades, Moses's assiduousness can be seen as a sustaining virtue in itself, and at some level Moses believes this.
We need to see our government demonstrate zero tolerance for corruption, and go after all offenders, regardless of political color, with the same assiduousness as with the campaign against illegal drugs.
However, unlike the heroic "assiduousness" that Carlyle celebrates in Christophers Wren and Columbus--his two paragons in the same chapter-these vessels will be employed in the creation of inebriate pleasure, not architectural and imperial watersheds.
Movement artists in Puerto Rico were inspired by Segarra for her assiduousness. Awilda Rodriguez Lora commented, "She offers us rigor.
The results were the outcome of assiduousness and promises of the students and the strong support from their families along with the diligent efforts of teachers, said the school authorities.