Synonyms for Indefatigable:
unflagging, unwearying, tireless.
persistent, seamless, monotonous, constant, regular, flat, steady, unbroken, unvarying, unceasing, continuous, monolithic, consistent, homogeneous, interminable, level, nonstop, perpetual, continual, recurrent, sequential, unchanging, unending, unchangeable, undying, even, endless, everlasting, coherent, gapless, incessant, unremitting, repetitive, invariable, lasting, perennial, cyclical, repeated, uniform, habitual, consecutive, un-intermittent, robot-like, continuing, straight, ceaseless, featureless, undeviating, connected.
unflagging, enduring, stoical, surviving, persevering, lasting, unwavering, tenacious, unfaltering, brave, abiding, steadfast, indomitable, patient, persistent.
persistent, tenacious, steely, dauntless, plucky, valiant, unchangeable, unwavering, thorough, determined, strong-minded, relentless, committed, spunky, hearty, headstrong, loyal, firm, dedicated, uncompromising, strong-willed, staunch, serious, unyielding, implacable, steady, constant, dogged, insistent, devoted, willing, true, inexorable, steadfast, faithful, bold, persevering, intent, resolved, indomitable, ruthless, fearless, decided, tireless, unflinching, diligent, earnest, unshakeable, deliberate, tough, iron-willed, courageous, reliable, stern, stubborn, set, decisive, resolute, bullheaded, zealous, unbending.
tough, tenacious, dogged, diligent, strong-willed, stubborn, bold, obstinate, spunky, faithful, stiff, brave, tireless, decisive, bulldogged, resolute, flintlike, unflagging, plucky, enduring, hearty, fervent, true, undaunted, strong, persevering, devoted, staunch, steadfast, bullheaded, dauntless, headstrong, stony, determined, courageous, obdurate, hard, indomitable, insistent, persistent.
patient, relentless, inexhaustible, unflagging, persistent, persevering, determined, tireless, unfaltering, steadfast, energetic, unwearied, unremitting, diligent, vigorous, unwavering, dogged, unwearying, unflinching, active.
n.vital, alive, lively, vigorous, animated, dynamic. •indefatigable (noun)
tireless, energetic, unwearying, unflagging.
Usage examples for indefatigable
He was indefatigable in his cause. – The Strength of Gideon and Other Stories Strength of Gideon; Mammy Peggy's Pride; Viney's Free Papers; The Fruitful Sleeping of The Rev. Elisha Edwards; The Ingrate; The Case of 'Ca'line'; The Finish of Patsy Barnes; One Man's Fortunes; Jim's Probation; U by Paul Laurence Dunbar