tireless

adjective

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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Big Tree farms also has a line of organic vanilla, brown and golden coconut sugars for a sweetener that gives back to farmers in Indonesia who are putting in tireless work in the name of regenerative organic farming. Andrew Watman, Forbes, 9 Mar. 2025 Hall has become so renowned for her tireless performance as Marlena Evans that she was recently cast in a role on the popular comedy Hacks that winks at her Days fame. Ryan Coleman, EW.com, 7 Mar. 2025 That statement, perhaps, is why Jackson tucked into the breast pocket of his suit that day two prayer cards: One was from the memorial service for Hesed House founder Sister Rose Marie Lorentzen, who died in December and was a tireless advocate for the homeless. Denise Crosby, Chicago Tribune, 6 Mar. 2025 Szoboszlai’s complete performance epitomised the tireless work ethic that ensured Liverpool took full advantage of Arsenal’s surprise defeat to West Ham United on Saturday by extending their lead at the summit to a commanding 11-point margin. James Pearce, The Athletic, 24 Feb. 2025 See All Example Sentences for tireless

Word History

First Known Use

1591, in the meaning defined above

Time Traveler
The first known use of tireless was in 1591

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Cite this Entry

“Tireless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tireless. Accessed 12 Mar. 2025.

Kids Definition

tireless

adjective
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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