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 Naomi, intent on both her missing sister and the increasingly vulnerable Celia, too often seems merely diligent than indefatigable. Elizabeth Hand, Washington Post, "In her new novel, Rene Denfeld draws on her experience as a homeless child," 28 Oct. 2019 Diane Warren The indefatigable songwriter, 63, has amassed 10 Oscar noms for best song. Paul Grein, Billboard, "Now That the AFI Is Finally Honoring Julie Andrews, Which Music Film Luminaries Should Be Next?," 16 Oct. 2019 Determined and indefatigable in defence, the 19-year-old does not shirk a physical battle and will fancy himself up against even the strongest of opponents., "Conor Gallagher Can Be the Next Chelsea Loanee to Break Through Under Frank Lampard," 6 Oct. 2019 Still, Downton's indefatigable Dowager Countess gets the last word, snapping back at Lady Bagshaw after being told she hasn't won. Chloe Foussianes, Town & Country, "The Latest Downton Abbey Sneak Peek Reveals Major Spoilers About the New Movie," 15 Sep. 2019 Joe Gomez has also played at left back on occasion, though both players offer different characteristics to the indefatigable Robertson., "Andrew Robertson Set for Late Fitness Test Ahead of Napoli Champions League Clash," 17 Sep. 2019 The show, which draws its name from a relatively obscure 1955 Leiber and Stoller single, is delivered by an indefatigable nine-member cast of local and imported talent. Dominic P. Papatola, Twin Cities, "Theater review: ‘Smokey Joe’s Cafe’: huge helpings of tunes drenched in nostalgia gravy on the menu," 13 Sep. 2019 Support for the law was driven by Walter Plecker, then-registrar of the state’s Bureau of Vital Statistics and an indefatigable racist. Rachel Weiner, Washington Post, "‘Aryan’ and ‘Octoroon’: Couples challenge racial labels to get married in Virginia," 6 Sep. 2019 And so Thompson, an indefatigable explorer of the labs’ nooks and crannies, finally found that PDP-7 shortly after Davis and Baker cancelled Multics. Richard Jensen, Ars Technica, "Unix at 50: How the OS that powered smartphones started from failure," 29 Aug. 2019

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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Statistics for indefatigable

Last Updated

16 Nov 2019

Time Traveler for indefatigable

The first known use of indefatigable was in 1608

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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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