Synonyms of indefatigable in English:

indefatigable


See definition of indefatigable

adjective

1‘he is one of those indefatigable researchers who won't take no for an answer’

SYNONYMS

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