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
As is often the case, the tireless instinct of creativity generally thwarted this effort.
—
Rachel Cusk, New Yorker, 24 Aug. 2025
Wheeler’s bold vision and tireless energy redefined what NASCAR could be, helping put Charlotte Motor Speedway — and the city itself — at the heart of stock car racing.
—Shane Connuck, Charlotte Observer, 21 Aug. 2025
Verónica Serrano described her father as a tireless fighter who came from a long line of lawyers who advocated for human rights and social justice.
—Syra Ortiz Blanes, Miami Herald, 21 Aug. 2025
The only reason the Uptown Theatre survived during that 30-year period was due to the tireless efforts of Bob Boin, Dave Syfczak, Jimmy Wiggins, Curt Mangel, former 48th Ward Ald.
—Jerry Mickelson, Chicago Tribune, 15 Aug. 2025
See All Example Sentences for tireless
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Rachel Cusk, New Yorker, 24 Aug. 2025
Wheeler’s bold vision and tireless energy redefined what NASCAR could be, helping put Charlotte Motor Speedway — and the city itself — at the heart of stock car racing.
—Shane Connuck, Charlotte Observer, 21 Aug. 2025
Verónica Serrano described her father as a tireless fighter who came from a long line of lawyers who advocated for human rights and social justice.
—Syra Ortiz Blanes, Miami Herald, 21 Aug. 2025
The only reason the Uptown Theatre survived during that 30-year period was due to the tireless efforts of Bob Boin, Dave Syfczak, Jimmy Wiggins, Curt Mangel, former 48th Ward Ald.
—Jerry Mickelson, Chicago Tribune, 15 Aug. 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 31 Aug. 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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