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Synonyms of indefatigable in English:


  • he is one of those indefatigable researchers who won't take no for an answer
    energetic, dynamic, enthusiastic;
    unrelenting, relentless, unremitting, unswerving, unfaltering, unshakeable, indomitable;
    persistent, tenacious, determined, dogged, single-minded, assiduous, industrious
    [Antonyms] idle, feeble
  • Definition of indefatigable in:
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