tire·​less ˈtī(-ə)r-ləs How to pronounce tireless (audio)
: seemingly incapable of tiring : indefatigable
a tireless worker
tirelessly adverb
tirelessness noun

Examples of tireless in a Sentence

She has been a tireless advocate for reform. a tireless advocate for human rights
Recent Examples on the Web More than 15 years earlier, Andrés had begun channeling his status as a celebrity chef into tireless work in the world’s most desperate places, hammered by disasters natural and man-made. Nabih Bulos, Los Angeles Times, 2 Apr. 2024 Romero explains that the purpose of this mapping exercise is to highlight the tireless work carried out by indigenous women in the Colombian Amazon region to defend their rights, strengthen their traditional knowledge and promote their cultural identity. Andrew Wight, Forbes, 30 Mar. 2024 When the skies cleared above Tokyo’s historic Akasaka district late one evening in March 2023, no one in the city of 37 million people could have been more relieved than Masanori Aikawa, the tireless location manager employed by Warner Brothers Discovery’s Max and its hit TV series Tokyo Vice. Patrick Brzeski, The Hollywood Reporter, 30 Mar. 2024 Yet, aside from the fascinating technological insights this article provides, Crowell makes Sandvik herself intriguing: an unconventional woman who seems to have, perhaps unwillingly, taken on the mantle of defender of human digital rights, and done so with tireless dedication. Chris Wheatley, Longreads, 12 Mar. 2024 During a season in which a tireless Athletic side has only tasted a home defeat against Real Madrid, the region’s best will square up against something similarly intensive in Bielsa and Uruguay. Henry Flynn, Forbes, 26 Feb. 2024 Thanks to the tireless work of whistleblowers, journalists, and concerned citizens — the British public has given the only sane and responsible answer. The Editors, National Review, 14 Mar. 2024 The whole menu feels like a tireless attempt to surprise and delight with dishes like mushroom stroganoff ($32), Korean short rib pasta ($48) and whipped butternut squash ($19). The Indianapolis Star, 7 Mar. 2024 Calling him a connector with a tireless work ethic, Murray also praised El’Zabar’s ability to draw people in. Marcus J. Moore, New York Times, 5 Mar. 2024

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

Word History

First Known Use

1591, in the meaning defined above

Time Traveler
The first known use of tireless was in 1591

Dictionary Entries Near tireless

Cite this Entry

“Tireless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tireless. Accessed 20 Apr. 2024.

Kids Definition


tire·​less ˈtī(ə)r-ləs How to pronounce tireless (audio)
: seeming never to get tired
a tireless worker
tirelessly adverb

More from Merriam-Webster on tireless

Last Updated: - Updated example sentences
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