Synonyms of indefatigable in English:

indefatigable

adjective

  • he is one of those indefatigable researchers who won't take no for an answer
    tireless, untiring, never-tiring, unwearied, unwearying, unflagging; 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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