in·​de·​fat·​i·​ga·​ble | \ ˌin-di-ˈfa-ti-gə-bəl How to pronounce indefatigable (audio) \

Definition of indefatigable

: incapable of being fatigued : untiring an indefatigable worker

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Other Words from indefatigable

indefatigability \ ˌin-​di-​ˌfa-​ti-​gə-​ˈbi-​lə-​tē How to pronounce indefatigability (audio) \ noun
indefatigableness \ ˌin-​di-​ˈfa-​ti-​gə-​bəl-​nəs How to pronounce indefatigableness (audio) \ noun
indefatigably \ ˌin-​di-​ˈfa-​ti-​gə-​blē How to pronounce indefatigably (audio) \ adverb

Examples of indefatigable in a Sentence

a person of indefatigable patience an indefatigable laborer who can work from sunrise to sunset
Recent Examples on the Web Fletcher paired with Mike Echols in 1998 to give UW a pair of indefatigable cornerbacks, both of whom were redshirt freshmen. Jeff Potrykus, Milwaukee Journal Sentinel, "The list of the top 10 Wisconsin Badgers football players since 1995 starts with Ron Dayne. And then ...?," 25 May 2020 Thirty-five years later, the performer remains an activist in her art, basking in her indefatigable Black woman joy. Allison Mcgevna, Essence, "How Grace Jones Continues To Push Us To Be Powerful," 23 Apr. 2020 Nunn is the host of the Living Corporate podcast and an indefatigable champion for equity and inclusion in the workplace. Ellen Mcgirt, Fortune, "Co-creating the world of inclusion that we want to come next," 21 Apr. 2020 As the documentary transitions out of Camp Jened and into the larger movement, a hero emerges in Judy Heumann, a former counselor who would become one of the most indefatigable advocates for disability rights. Scott Tobias, Washington Post, "From make-out sessions to sit-ins, ‘Crip Camp’ hails a generation of disabled campers who grew into activists," 26 Mar. 2020 Aided by their agile bodies, long necks and sharp, quick beaks, the birds can pluck snails from vines and trunks, wriggling between rows of plants with an indefatigable spirit. Katherine J. Wu, Smithsonian Magazine, "An Army of Hungry Ducks Keeps This Historic South African Vineyard Pest-Free," 23 Mar. 2020 Even an indefatigable performer like Willie Nelson can’t outfox COVID-19. Dallas News, "Willie Nelson pushes new album release back to July because of pandemic," 23 Mar. 2020 Daniel Defoe, that indefatigable hack, published Journal of the Plague Year in 1722. Siddhartha Deb, The New Republic, "The Pandemic Imagination," 16 Mar. 2020 The high point was the keynote featuring AWS’s latest offerings by Andy Jassy, the firm’s indefatigable boss, who paced the stage for nearly three hours. The Economist, "Infrastructure Should data be crunched at the centre or at the edge?," 20 Feb. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'indefatigable.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of indefatigable

1608, in the meaning defined above

History and Etymology for indefatigable

Middle French, from Latin indefatigabilis, from in- + defatigare to fatigue, from de- + fatigare to fatigue

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Time Traveler for indefatigable

Time Traveler

The first known use of indefatigable was in 1608

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Statistics for indefatigable

Last Updated

31 May 2020

Cite this Entry

“Indefatigable.” Dictionary, Merriam-Webster, Accessed 2 Jun. 2020.

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More Definitions for indefatigable


How to pronounce indefatigable (audio)

English Language Learners Definition of indefatigable

formal : able to work or continue for a very long time without becoming tired

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More from Merriam-Webster on indefatigable

Thesaurus: All synonyms and antonyms for indefatigable

Spanish Central: Translation of indefatigable

Nglish: Translation of indefatigable for Spanish Speakers

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