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
Auschwitz survivor Eva Schloss, the stepsister of teenage diarist Anne Frank and a tireless educator about the horrors of the Holocaust, has died.
—
CBS News, 5 Jan. 2026
Eva Schloss, who survived the Holocaust as a teenager before becoming Anne Frank’s stepsister and a tireless campaigner against prejudice, has died at age 96, her trust announced Sunday.
—Issy Ronald, CNN Money, 5 Jan. 2026
The fest is now capably overseen by Nachhattar Singh Chandi, another successful businessman and longtime local who had served on the fest’s board under Matzner, with pivotal assistance from the fest’s longtime publicist and tireless champion Steven Wilson of Scenario PR.
—Scott Feinberg, HollywoodReporter, 2 Jan. 2026
He’s honed his tough-talking image over years on television, including tireless appearances as a talking head on news shows and a brief flirtation with political candidacy in Canada.
—Alison Willmore, Vulture, 2 Jan. 2026
See All Example Sentences for tireless
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
CBS News, 5 Jan. 2026
Eva Schloss, who survived the Holocaust as a teenager before becoming Anne Frank’s stepsister and a tireless campaigner against prejudice, has died at age 96, her trust announced Sunday.
—Issy Ronald, CNN Money, 5 Jan. 2026
The fest is now capably overseen by Nachhattar Singh Chandi, another successful businessman and longtime local who had served on the fest’s board under Matzner, with pivotal assistance from the fest’s longtime publicist and tireless champion Steven Wilson of Scenario PR.
—Scott Feinberg, HollywoodReporter, 2 Jan. 2026
He’s honed his tough-talking image over years on television, including tireless appearances as a talking head on news shows and a brief flirtation with political candidacy in Canada.
—Alison Willmore, Vulture, 2 Jan. 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 9 Jan. 2026.
Copy CitationKids Definition
tireless
adjective
tire·less
ˈtī(ə)r-ləs
: seeming never to get tired
a tireless worker
tirelessly
adverb
Love words? Need even more definitions?
Merriam-Webster unabridged
Share