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
Thank you all for the tireless support and friendship.
—
Carly Thomas, HollywoodReporter, 9 Nov. 2025
Mark Sain remembered as tireless advocate for children Sain, a 1977 graduate of Milwaukee's Washington High School, spent his later years advocating for literacy and higher quality education.
—Drake Bentley, jsonline.com, 7 Nov. 2025
Condoleezza Rice remembers Cheney as mentor and patriot Former Secretary of State Condoleezza Rice paid tribute to Vice President Dick Cheney, calling him a mentor, friend, and tireless defender of the United States.
—Shane Croucher, MSNBC Newsweek, 4 Nov. 2025
After days of tireless searching, police finally made a big move in the case of a robbery at a certain Paris museum.
—Nicole Hoey, Robb Report, 27 Oct. 2025
See All Example Sentences for tireless
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Carly Thomas, HollywoodReporter, 9 Nov. 2025
Mark Sain remembered as tireless advocate for children Sain, a 1977 graduate of Milwaukee's Washington High School, spent his later years advocating for literacy and higher quality education.
—Drake Bentley, jsonline.com, 7 Nov. 2025
Condoleezza Rice remembers Cheney as mentor and patriot Former Secretary of State Condoleezza Rice paid tribute to Vice President Dick Cheney, calling him a mentor, friend, and tireless defender of the United States.
—Shane Croucher, MSNBC Newsweek, 4 Nov. 2025
After days of tireless searching, police finally made a big move in the case of a robbery at a certain Paris museum.
—Nicole Hoey, Robb Report, 27 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 10 Nov. 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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