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
His wife, Patricia, rose to fame as a socialite and tireless fundraiser for charitable causes, including AIDS research.
—
Foreign Affairs, 24 June 2025
The regular action there, not to mention tireless pregame work with coach David Macias, allowed Sheets to escape a play off the left-field wall without incident on Saturday.
—Jeff Sanders, San Diego Union-Tribune, 22 June 2025
Described by insiders as a calm, yet tireless worker, a skilled negotiator, and a respected leader, Loftus was promoted to partner at IAG in 2018.
—Matt Grobar, Deadline, 18 June 2025
Mike Rowe’s new skilled trades partnership is a logical next step in his tireless advocacy for trades careers.
—Jim Vinoski, Forbes.com, 18 June 2025
See All Example Sentences for tireless
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Foreign Affairs, 24 June 2025
The regular action there, not to mention tireless pregame work with coach David Macias, allowed Sheets to escape a play off the left-field wall without incident on Saturday.
—Jeff Sanders, San Diego Union-Tribune, 22 June 2025
Described by insiders as a calm, yet tireless worker, a skilled negotiator, and a respected leader, Loftus was promoted to partner at IAG in 2018.
—Matt Grobar, Deadline, 18 June 2025
Mike Rowe’s new skilled trades partnership is a logical next step in his tireless advocacy for trades careers.
—Jim Vinoski, Forbes.com, 18 June 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 6 Jul. 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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