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
From overcoming early barriers as a woman in medicine to helping modernize cardiac care and mentoring the next generation of physicians, her passion for healing and her tireless work have made a significant impact.
—
Lyssanoel Frater, USA Today, 30 July 2025
These agents are emerging as tireless, adaptable teammates.
—Naveen Edapurath Vijayan, Forbes.com, 29 July 2025
For many, Davis has long been a scene fulcrum, a tireless DIY hero, and a generational songwriting talent.
—Jon Blistein, Rolling Stone, 21 July 2025
Princess Anne is known for her tireless approach to royal duty, following in the footsteps of her late parents, Queen Elizabeth and Prince Philip.
—Janine Henni, People.com, 21 July 2025
See All Example Sentences for tireless
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Lyssanoel Frater, USA Today, 30 July 2025
These agents are emerging as tireless, adaptable teammates.
—Naveen Edapurath Vijayan, Forbes.com, 29 July 2025
For many, Davis has long been a scene fulcrum, a tireless DIY hero, and a generational songwriting talent.
—Jon Blistein, Rolling Stone, 21 July 2025
Princess Anne is known for her tireless approach to royal duty, following in the footsteps of her late parents, Queen Elizabeth and Prince Philip.
—Janine Henni, People.com, 21 July 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 3 Aug. 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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