1. (a.) Prosecuted with careful attention and effort; careful; painstaking; not careless or negligent.

2. (a.) Interestedly and perseveringly attentive; steady and earnest in application to a subject or pursuit; assiduous; industrious.

academic advertent agog alert all ears all eyes ardent assiduous attentive aware bookish careful concentrated conscientious conscious constant continuing devoted to studies dogged donnish dryasdust earnest elaborate enduring energetic faithful fervent finical finicking finicky hard hard-working hardworking heedful immutable inalterable indefatigable indomitable industrious insistent intense intent intentive invincible laborious lasting loyal mandarin meticulous mindful never idle never-tiring nice niggling observant observing obstinate on the ball on the job open-eared open-eyed openmouthed operose owlish painstaking patient patient as Job pedantic permanent perseverant persevering persistent persisting pertinacious plodding plugging preoccupied professorial punctilious rabbinic rapt regardful relentless resolute scholarly scholastic scrupulous sedulous single-minded sleepless slogging stable steadfast steady strenuous stubborn studious tenacious thorough thoroughgoing tireless unabating unconquerable undaunted undiscouraged undrooping unfailing unfaltering unflagging unflinching unintermitting uninterrupted unnodding unrelaxing unrelenting unremitting unsleeping unsparing unswerving untiring unwavering unwearied unwearying unwinking utterly attentive vehement watchful weariless zealous