Synonyms and related words :
abandoned, acquiescent, active, afire, ardent, assiduous, burning, committed, compliant, complying, conforming, conscientious, consistent, constant, continuing, dedicated, dependable, devoted, devout, diligent, dogged, duteous, dutiful, earnest, enduring, faithful, fervent, fervid, fiery, firm, fixed, flaming, flinty, hearty, heated, hot, hot-blooded, immovable, immutable, impassioned, in earnest, inalterable, indefatigable, indomitable, industrious, inflexible, insistent, intense, intent, intent on, invincible, lasting, law-abiding, liege, marble-constant, meticulous, mindful, never-tiring, obedient, observant, obstinate, on fire, passionate, patient, patient as Job, patriotic, perfervid, permanent, perseverant, persevering, persistent, persisting, pertinacious, plodding, plugging, practicing, preoccupied, punctilious, punctual, rapt, red-hot, regardful, relentless, reliable, resolute, scrupulous, sedulous, serious, set, settled, sincere, single-minded, sleepless, slogging, sot, spirited, stable, staunch, steadfast, steady, steely, stubborn, submissive, tenacious, tireless, TRUE, true-blue, trusted, trustworthy, trusty, unabating, unbending, unconquerable, undaunted, undeflectable, undiscouraged, undrooping, unfailing, unfaltering, unflagging, unflappable, unflinching, unintermitting, uninterrupted, unnodding, unrelaxing, unrelenting, unremitting, unshaken, unsleeping, unswerving, untiring, unwavering, unwearied, unwearying, unwinking, unyielding, utterly attentive, vehement, warm, weariless, white-hot, willing, zealous