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 child’s native mode of learning, asking questions out loud, finally has a tireless respondent.
—
Gerald Bradshaw, Chicago Tribune, 13 Mar. 2026
Thus began Job’s tireless pursuit to bring the colonel to justice.
—Christopher Vourlias, Variety, 10 Mar. 2026
Both teams were certainly dealing with exhaustion, but tireless Tia Chan, who starred in this game two years ago, turned in another clutch performance, making 57 saves, including 33 during 25 1/2 minutes of sudden death overtime, many of then spectacular.
—Dom Amore, Hartford Courant, 8 Mar. 2026
Boyd has since spruced up the grave marker, but is now spearheading efforts to get the Elys, a prominent Black couple who were tireless advocates for advancing education for Black people in South Florida, a new grave marker.
—Miami Herald, 6 Mar. 2026
See All Example Sentences for tireless
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Gerald Bradshaw, Chicago Tribune, 13 Mar. 2026
Thus began Job’s tireless pursuit to bring the colonel to justice.
—Christopher Vourlias, Variety, 10 Mar. 2026
Both teams were certainly dealing with exhaustion, but tireless Tia Chan, who starred in this game two years ago, turned in another clutch performance, making 57 saves, including 33 during 25 1/2 minutes of sudden death overtime, many of then spectacular.
—Dom Amore, Hartford Courant, 8 Mar. 2026
Boyd has since spruced up the grave marker, but is now spearheading efforts to get the Elys, a prominent Black couple who were tireless advocates for advancing education for Black people in South Florida, a new grave marker.
—Miami Herald, 6 Mar. 2026
See All Example Sentences for tireless
Cite this Entry
“Tireless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tireless. Accessed 19 Mar. 2026.
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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