tireless
adjective
tire·less
ˈtī(-ə)r-ləs 
: 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
Most of the early reporting was done by Townsend Miller, a tireless champion of progressive country who probably does not receive enough credit for the rise of that genre during this period.
—
Michael Barnes, Austin American Statesman, 2 July 2025
This would not have been possible without tireless work from our excellent lawyers @TheJusticeDept and our Solicitor General John Sauer.
—Hollie Silverman, MSNBC Newsweek, 29 June 2025
Thanks to the tireless work of Photopia and the many artists, educators, and institutions involved, Cairo Photo Week is fostering a space where ideas can take root and visions can evolve.
—Daniel Rodríguez Gordillo, Vogue, 26 June 2025
The cornerstones of maps’ data pools are satellite images and a tireless fleet of Street View cars that roam with ungainly camera hats, constantly refreshing neighborhood-level detail.
—Sonya Bennett-Brandt, AFAR Media, 25 June 2025
See All Example Sentences for tireless
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.
Michael Barnes, Austin American Statesman, 2 July 2025
This would not have been possible without tireless work from our excellent lawyers @TheJusticeDept and our Solicitor General John Sauer.
—Hollie Silverman, MSNBC Newsweek, 29 June 2025
Thanks to the tireless work of Photopia and the many artists, educators, and institutions involved, Cairo Photo Week is fostering a space where ideas can take root and visions can evolve.
—Daniel Rodríguez Gordillo, Vogue, 26 June 2025
The cornerstones of maps’ data pools are satellite images and a tireless fleet of Street View cars that roam with ungainly camera hats, constantly refreshing neighborhood-level detail.
—Sonya Bennett-Brandt, AFAR Media, 25 June 2025
See All Example Sentences for tireless
Cite this Entry
“Tireless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tireless. Accessed 11 Jul. 2025.
Copy CitationKids Definition
tireless
adjective
tire·less
ˈtī(ə)r-ləs
: seeming never to get tired
a tireless worker
tirelessly
adverb
Love words? Need even more definitions?
Merriam-Webster unabridged
Share