Assiduous

a.	1.	Constant in application or attention; devoted; attentive; unremitting. She grows more assiduous in her attendance. - Addison.
	2.	Performed with constant diligence or attention; unremitting; persistent; as, assiduous labor. To weary him with my assiduous cries. - Milton.

Adj.

1.

assiduous - marked by care and persistent effort; "her assiduous attempts to learn French"; "assiduous research"; "sedulous pursuit of legal and moral principles" Synonyms: sedulous

advertent, agog, alert, all ears, all eyes, ardent, attentive, aware, careful, concentrated, conscious, constant, continuing, diligent, dogged, earnest, elaborate, enduring, energetic, faithful, fervent, finical, finicking, finicky, hard, hardworking, heedful, immutable, inalterable, indefatigable, indomitable, industrious, insistent, intense, intent, intentive, invincible, laborious, lasting, loyal, meticulous, mindful, never idle, never-tiring, nice, niggling, observant, observing, obstinate, on the ball, on the job, open-eared, open-eyed, openmouthed, operose, painstaking, patient, patient as Job, permanent, perseverant, persevering, persistent, persisting, pertinacious, plodding, plugging, preoccupied, rapt, regardful, relentless, resolute, sedulous, single-minded, sleepless, slogging, stable, steadfast, steady, strenuous, stubborn, 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