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 Ali: Alfred Russel Wallace’s Right-Hand Gun Wallace wouldn't have become a famous naturalist without help from colonial networks and hundreds of locals, including his indefatigable Sarawak servant, Ali. JSTOR Daily, 24 June 2024 Good thing 93-year-old Thelma (an indefatigable June Squibb) is no softie. Eric Andersson, Peoplemag, 21 June 2024 In addition to documenting Friedländer impeccable attire and indefatigable spirit, the Vogue article includes her public condemnation of the rise of the political far right in Germany. Philissa Cramer, Sun Sentinel, 20 June 2024 When the hotel opened two years ago, there were still some elements that weren’t quite finished—not for lack of effort by its owner, the indefatigable Valentina De Santis. Liam Hess, Vogue, 18 June 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 7 Jul. 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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