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
Kleinschmidt said both players are tireless workers on and off the court.
—
Matt Zahn, CBS News, 29 Jan. 2026
The elder Allen agreed that Dante’s selflessness and tireless work rate is rare.
—Michelle Kaufman, Miami Herald, 28 Jan. 2026
We are deeply saddened by the loss of Betsy Brenner, a visionary leader and tireless advocate for our community.
—Thomas Koetting, jsonline.com, 24 Jan. 2026
In recognition of her tireless efforts and the impact her work had on the casting community, Adler will be receiving the Rosalie Joseph Humanitarian Award, given to those who have made outstanding contributions to humanitarian causes that have in turn supported the casting community.
—Payton Turkeltaub, Variety, 23 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.
Matt Zahn, CBS News, 29 Jan. 2026
The elder Allen agreed that Dante’s selflessness and tireless work rate is rare.
—Michelle Kaufman, Miami Herald, 28 Jan. 2026
We are deeply saddened by the loss of Betsy Brenner, a visionary leader and tireless advocate for our community.
—Thomas Koetting, jsonline.com, 24 Jan. 2026
In recognition of her tireless efforts and the impact her work had on the casting community, Adler will be receiving the Rosalie Joseph Humanitarian Award, given to those who have made outstanding contributions to humanitarian causes that have in turn supported the casting community.
—Payton Turkeltaub, Variety, 23 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 2 Feb. 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
