THESAURUS
application, assiduity, assiduous, assiduousness, bulldog tenacity, concentration, constancy, constant, continuing, diligence, diligent, dogged, dogged perseverance, doggedness, donkeywork, drudge, drudgery, drudging, endurance, enduring, engrossment, faithful, fidelity, grind, grinding, grubbing, hardworking, immutable, inalterable, indefatigability, indefatigable, indomitable, industrious, industriousness, industry, insistence, insistency, insistent, invincible, labor, laboring, lasting, loyal, loyalty, moil, never-tiring, obstinacy, obstinate, patience, patience of Job, patient, patient as Job, pegging, permanence, permanent, perseverance, perseverant, persevering, persistence, persistency, persistent, persisting, pertinacious, pertinaciousness, pertinacity, plodding, preoccupation, preoccupied, rapt, relentless, relentlessness, resolute, resolution, sedulity, sedulous, sedulousness, single-minded, single-mindedness, singleness of purpose, slavery, slaving, sleepless, slogging, stability, stable, stamina, staying power, steadfast, steadfastness, steadiness, steady, stick-to-itiveness, straining, striving, struggling, stubborn, stubbornness, sweating, tenacious, tenaciousness, tenacity, tireless, tirelessness, toil, toiling, unabating, unconquerable, undaunted, undiscouraged, undrooping, unfailing, unfaltering, unflagging, unflinching, unintermitting, uninterrupted, unnodding, unrelaxing, unrelenting, unremitting, unremittingness, unsleeping, unswerving, unswerving attention, untiring, unwavering, unwearied, unwearying, unwinking, utterly attentive, weariless, working
