Pocket Thesaurus
Antonyms of indefatigable
unwavering, dogged, energetic, diligent, inexhaustible, unflagging, relentless, assiduous, painstaking, vigorous, tireless, active, bound and determined, determined, hell-bent, industrious, ironclad, patient, persevering, persistent, pertinacious, sedulous, steadfast, strenuous, unfaltering, unflinching, unremitting, unwearied, dead set on, nose to grindstone, stop at nothing, unwearying
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