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
McBurnie, who joined from Spanish club Las Palmas back in August, signing three days before their opening game, has typified Hull’s season — a player revitalised, a tireless worker and one of the arrivals who came in on a free transfer or loan following their EFL transfer embargo last summer.
—
Tom Burrows, New York Times, 23 May 2026
The random, tireless way this bird beats its head into its quarry is symbolic of, and perfect for, our times.
—Christopher Gangemi, New Yorker, 21 May 2026
If vice president of operations Chip Conway, a tireless worker in a thankless job, books the wrong hotel he will likely be forced to run back to Denver.
—Troy Renck, Denver Post, 15 May 2026
To those who disagreed with him, Adams was a tireless pest trying to force his views onto more moderate and prudent men.
—Literary Hub, 13 May 2026
See All Example Sentences for tireless
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Tom Burrows, New York Times, 23 May 2026
The random, tireless way this bird beats its head into its quarry is symbolic of, and perfect for, our times.
—Christopher Gangemi, New Yorker, 21 May 2026
If vice president of operations Chip Conway, a tireless worker in a thankless job, books the wrong hotel he will likely be forced to run back to Denver.
—Troy Renck, Denver Post, 15 May 2026
To those who disagreed with him, Adams was a tireless pest trying to force his views onto more moderate and prudent men.
—Literary Hub, 13 May 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 29 May. 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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