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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.
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"


Steady attention and effort, as to one's occupation:


References in periodicals archive ?
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.
Peter plots with the assiduousness of the young chess player he once was and sticks to short chapters, reasoning that if most people are like him, they read in bed and are put off by long ones.
Here, the quest he seeks is figured as a kind of culinary treat, a reward for the patience and assiduousness demonstrated during his time as a kitchen-hand.
Treading the path of the truth on this [ethical] pattern in commerce is more difficult than assiduousness in [the observance of] the supererogatory devotions (nawafil al-'ibadat) and secluding oneself for them.
And it is this assiduousness of your action, / that makes you accomplish your beauty" (178).
Warwickshire's batsmen did not match the bowlers' assiduousness as the Bears replied with 139 for six by the close.
Meanwhile, a Foreign Office source told the newspaper: 'Nobody should decry the energy and assiduousness with which the British government and the Metropolitan Police are seeking a solution to the murder of one of their police officers.
Bieri probes this possibility with characteristic assiduousness, though his task in this instance is extraordinarily difficult, for he must contend with Percy's, Mary's, and Claire's concerted effort to conceal the details of January and early February of 1819: Claire's journal is missing, Mary stopped her journal for those six weeks, and a depressed Percy would write to Peacock in England stating clearly for anyone else's eyes, "we see absolutely no one here," possibly concealing contact with someone connected to Elena Adelaide.
What the introduction above does emphasise, though, is that the make-up of an eighteenth-century London libretto was an arbitrary business, governed by such factors as the balance of power in the administration, the desire of that administration to present a particular image, or even the assiduousness of the theatre copyist preparing the version for the printer; the careful presentation of all those who were truly involved in the season was not a priority, nor, indeed, of interest.
With devotion and academic assiduousness he studies the construction of the female body and sheds light (if only a muted one) on a genre that not long ago languished forgotten in the Albertina's Graphic Arts collection.
The fact that a local industrial tradition doesn't exist results in the nonfulfillment of work rules that are deemed normal in the parent company (examples are assiduousness, working hours and the carrying out of tasks).
21) Another indicator of the assiduousness of the defense is the nearly unprecedented volume of pretrial motions filed by military defense counsel in the commissions.