indefatigable

adjective

in·​de·​fat·​i·​ga·​ble ˌin-di-ˈfa-ti-gə-bəl How to pronounce indefatigable (audio)
: incapable of being fatigued : untiring
an indefatigable worker
indefatigability noun
indefatigableness noun
indefatigably 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 But Usher has proven his staying power with aplomb — and an indefatigable outlook. Gail Mitchell, Billboard, 8 Oct. 2024 Since that day the Guardians have been getting more than their money’s worth from the indefatigable All-Star third baseman, who does indeed seem destined to one day become a strong candidate for a plaque in Cooperstown. Jim Ingraham, Forbes, 28 Sep. 2024 Slotkin, a prodigious fundraiser and the only Jewish member of Michigan’s congressional delegation, is also an indefatigable campaigner and leaves little to chance. Staff, Detroit Free Press, 21 Sep. 2024 The city’s seemingly indefatigable energy has become a source of hope and motivation for young creatives who have established their own brands here despite challenging economic and political circumstances. Feride Yalav-Heckeroth, Condé Nast Traveler, 6 Sep. 2024 See all Example Sentences for indefatigable 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'indefatigable.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

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

First Known Use

1608, in the meaning defined above

Time Traveler
The first known use of indefatigable was in 1608

Dictionary Entries Near indefatigable

Cite this Entry

“Indefatigable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/indefatigable. Accessed 30 Oct. 2024.

Kids Definition

indefatigable

adjective
in·​de·​fat·​i·​ga·​ble ˌin-di-ˈfat-i-gə-bəl How to pronounce indefatigable (audio)
: capable of working a long time without tiring : tireless
an indefatigable teacher
indefatigably adverb

More from Merriam-Webster on indefatigable

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