tireless

adjective

tire·​less ˈtī(-ə)r-ləs How to pronounce tireless (audio)
: 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
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.
Unable to corroborate some of the stories with multiple witnesses, however, but thanks to Poindexter’s and others’ tireless efforts on behalf of his fellow soldiers, the entire unit was awarded the Presidential Unit Citation in 2009. Chris Dorsey, Forbes, 17 Dec. 2024 Leslie is touched, and what follows is a very cute, very Parks and Rec ending, as Leslie is rewarded for her tireless efforts over the years as everybody’s colleague and friend. Marianne Eloise, Vulture, 11 Dec. 2024 Macron thanked more than 1,200 artisans at the cathedral for their tireless work in restoring the Gothic landmark, which is a World Heritage site and in the past has drawn more than 13 million visitors a year. Eleanor Beardsley, NPR, 29 Nov. 2024 For the last 30 years, Knapp and a tireless group of biologists have been scouring the few fish-free lakes left for remnant populations of the once iconic frog. Elizabeth Weise, USA TODAY, 16 Nov. 2024 See all Example Sentences for tireless 

Word History

First Known Use

1591, in the meaning defined above

Time Traveler
The first known use of tireless was in 1591

Dictionary Entries Near tireless

Cite this Entry

“Tireless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tireless. Accessed 30 Dec. 2024.

Kids Definition

tireless

adjective
tire·​less ˈtī(ə)r-ləs How to pronounce tireless (audio)
: seeming never to get tired
a tireless worker
tirelessly adverb

More from Merriam-Webster on tireless

Last Updated: - Updated example sentences
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