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 city of San Francisco is getting safer, thanks to the tireless work of Mayor Daniel Lurie.
—
Jim Cramer, CNBC, 19 Oct. 2025
Sometimes that truth was heroic—his tireless advocacy for Leonard Peltier, or in defense of the Arctic National Wildlife Refuge—and sometimes the truth was less flattering.
—Literary Hub, 14 Oct. 2025
The fight for justice never ends as Benson and her squad provide a tireless voice for the voiceless.
—Denise Petski, Deadline, 10 Oct. 2025
Ati Motors’ Mecha represents this pragmatic vision for the future of robotics, which is not a humanoid for exhibition but a capable, tireless system designed to work alongside humans in industrial settings.
—Kaif Shaikh, Interesting Engineering, 8 Oct. 2025
See All Example Sentences for tireless
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Jim Cramer, CNBC, 19 Oct. 2025
Sometimes that truth was heroic—his tireless advocacy for Leonard Peltier, or in defense of the Arctic National Wildlife Refuge—and sometimes the truth was less flattering.
—Literary Hub, 14 Oct. 2025
The fight for justice never ends as Benson and her squad provide a tireless voice for the voiceless.
—Denise Petski, Deadline, 10 Oct. 2025
Ati Motors’ Mecha represents this pragmatic vision for the future of robotics, which is not a humanoid for exhibition but a capable, tireless system designed to work alongside humans in industrial settings.
—Kaif Shaikh, Interesting Engineering, 8 Oct. 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 21 Oct. 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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