sedulous

adj

Etymology: From Latin sēdulus (“diligent, industrious, sedulous; solicitous; unremitting; zealous”) + English -ous. Sēdulus is probably derived from sēdulō (“diligently; carefully; purposely; zealously”) (possibly from sē- (prefix meaning ‘without’) + dolō (ablative singular of dolus (“deceit, deception; evil intent, malice”), ultimately from Proto-Indo-European *del- (“to count, reckon”))) + -us (suffix forming adjectives).

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

   “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, [...]”

   “His [Edward III of England's] parliament made frequent remonſtrances againſt this baſe oblivion of himſelf: the parliaments, at this time, were not as formerly, factions ready to oppreſs public liberty, but aſſemblies of wiſe and good men, ſedulous for common welfare, and of wiſdom equal to the rectitude of their intentions; [...]”

2. Of an activity: carried out with diligence.

   “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.”

   “Miss [Elizabeth] Branwell's affectionate regard for her dead sister's [Maria Branwell's] children caused her to take deep interest in everything relating to them, their health, the comfort and cleanliness of their home, and the sedulous culture of their minds.”