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
The four-and-a-half hour film explored in tireless detail, and in ways previously unknown or unexplored, the extent to which Vichy France played the role of willing Nazi collaborators — focusing largely on Clermont-Ferrand, a single city in central France.
—
Andrew Lapin, Sun Sentinel, 27 May 2025
For a man who had crossed an ocean from Calabria, Italy, to build a better life, who had poured himself into his family with tireless devotion, this was a full-circle moment.
—Tereza Shkurtaj, People.com, 25 May 2025
Take the case of Steve Jobs, who was commonly described as a tireless perfectionist.
—Esade Business & Law School, Forbes.com, 23 May 2025
Imagine having a tireless guardian watching over you during your subway commute.
—Kurt Knutsson, FOXNews.com, 23 May 2025
See All Example Sentences for tireless
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Andrew Lapin, Sun Sentinel, 27 May 2025
For a man who had crossed an ocean from Calabria, Italy, to build a better life, who had poured himself into his family with tireless devotion, this was a full-circle moment.
—Tereza Shkurtaj, People.com, 25 May 2025
Take the case of Steve Jobs, who was commonly described as a tireless perfectionist.
—Esade Business & Law School, Forbes.com, 23 May 2025
Imagine having a tireless guardian watching over you during your subway commute.
—Kurt Knutsson, FOXNews.com, 23 May 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 5 Jun. 2025.
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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