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
That’s certainly what led Caligiuri to become an ambassador and tireless advocate for the UPSL.
—
Los Angeles Times, 7 June 2026
The tireless Mikal Bridges plays defense and offense with the elegance of a fine jazzman.
—Michael Powell, The Atlantic, 3 June 2026
The midfield three is largely set, with Alan Franco and Pedro Vite likely to join the tireless Moises Caicedo, but young Kendry Paez will fight for his place, despite disappointing loan spells at Strasbourg and River Plate this season.
—Nnamdi Onyeagwara, New York Times, 1 June 2026
Wildmon applied this knowledge to a tireless quest to reform American popular culture.
—Isaac Butler, New Yorker, 30 May 2026
See All Example Sentences for tireless
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Los Angeles Times, 7 June 2026
The tireless Mikal Bridges plays defense and offense with the elegance of a fine jazzman.
—Michael Powell, The Atlantic, 3 June 2026
The midfield three is largely set, with Alan Franco and Pedro Vite likely to join the tireless Moises Caicedo, but young Kendry Paez will fight for his place, despite disappointing loan spells at Strasbourg and River Plate this season.
—Nnamdi Onyeagwara, New York Times, 1 June 2026
Wildmon applied this knowledge to a tireless quest to reform American popular culture.
—Isaac Butler, New Yorker, 30 May 2026
See All Example Sentences for tireless
Cite this Entry
“Tireless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tireless. Accessed 10 Jun. 2026.
Copy CitationKids Definition
tireless
adjective
tire·less
ˈtī(ə)r-ləs
: seeming never to get tired
a tireless worker
tirelessly
adverb
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