• (RP) IPA: /ˈsɛd͡ʒʊləs/, /ˈsɛdjʊ-/
• (GA) IPA: /ˈsɛd͡ʒələs/

sedulous

1. Of a person: diligent in application or pursuit; constant and persevering in business or in endeavour#Noun|endeavours to effect#Verb|effect a goal; steadily industrious.

   Synonyms: assiduous, Thesaurus:industrious

   • 1667, John Milton, “Book IX ↗”, in Paradise Lost. A Poem Written in Ten Books, London: Printed [by Samuel Simmons], and are to be sold by Peter Parker […] [a]nd by Robert Boulter […] [a]nd Matthias Walker, […], OCLC 228722708 ↗; republished as Paradise Lost in Ten Books: The Text Exactly Reproduced from the First Edition of 1667: […], London: Basil Montagu Pickering […], 1873, OCLC 230729554 ↗, lines 25–29:

     Since firſt this Subject for Heroic Song / Pleaſ'd me long chooſing, and beginning late; / Not ſedulous by Nature to indite / Warrs, hitherto the onely Argument / Heroic deem'd, [...]

   • 1850, Nathaniel Hawthorne, “Hester and Pearl”, in The Scarlet Letter, a Romance, Boston, Mass.: Ticknor, Reed, and Fields, OCLC 223202227 ↗, page 212 ↗:

     She wondered what sort of herbs they were which the old man was so sedulous to gather.

   • 1915, Ford Madox Hueffer [i.e., Ford Madox Ford], chapter I, in The Good Soldier: A Tale of Passion, London: John Lane, The Bodley Head; New York, N.Y.: John Lane Company, OCLC 32425523 ↗; republished Harmondsworth, Middlesex [London]: Penguin Books, 1972 (1982 printing), →ISBN, part I, page 15 ↗:

     Leading the life I did, of the sedulous, strained nurse, I had to do something to keep myself fit.

2. Of an activity: carried out with diligence.
   • 1646, Thomas Browne, “Of the Nearer and More Immediate Causes of Popular Errours, […]”, in Pseudodoxia Epidemica: Or, Enquiries into Very Many Received Tenents, and Commonly Presumed Truths, London: Printed for Tho. Harper for Edvvard Dod, OCLC 838860010 ↗; Pseudodoxia Epidemica: Or, Enquiries into Very Many Received Tenents, and Commonly Presumed Truths. […], 2nd corrected and much enlarged edition, London: Printed by A. Miller, for Edw[ard] Dod and Nath. Ekins, […], 1650, OCLC 152706203 ↗, book 1, page 14 ↗:

     Now as there are many great wits to be condemned, who have neglected the increment of Arts, and the ſedulous purſuit of knowledge; ſo are there not a few very much to be pittied, whoſe induſtry being not attended with naturall parts, they have ſweat to little purpoſe, and rolled the ſtone in vain.

• sedulity

• French: pointilleux
• German: eifrig, emsig, gewissenhaft
• Italian: diligente, meticoloso, solerte
• Russian: приле́жный