merciless

adjective

mer·​ci·​less ˈmər-si-ləs How to pronounce merciless (audio)
: having or showing no mercy : pitiless
the merciless killing of innocent people
mercilessly adverb
mercilessness noun

Examples of merciless in a Sentence

the merciless killing of innocent people He has been merciless in his criticism of his opponent.
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.
Private equity moving into professional sports conjures the same fears of merciless efficiency in an industry driven by sentimentality, but Arougheti brushes off the concerns, arguing that institutional capital will increase profitability and allow owners to invest more in their teams. Leo Schwartz, Fortune, 21 July 2025 Beyond the numbers is the human toll of Trump’s merciless campaign. South Florida Sun Sentinel, Sun Sentinel, 21 July 2025 To pull off the ultimate heist in a world where trust is scarce, Halston must assemble an unlikely crew of fixers, including an expert in forgery, a merciless mob boss, and an eccentric fashion designer. Ellise Shafer, Variety, 16 July 2025 Frank Trapper / Contributor/Corbis Entertainment Lydia is a high-ranking and merciless executive at Madrigal Electromotive who helps supply Walt's meth operation. Lydia Patrick, MSNBC Newsweek, 7 July 2025 See All Example Sentences for merciless

Word History

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of merciless was in the 14th century

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Cite this Entry

“Merciless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/merciless. Accessed 29 Jul. 2025.

Kids Definition

merciless

adjective
mer·​ci·​less ˈmər-si-ləs How to pronounce merciless (audio)
: having no mercy : pitiless
merciless slaughter
mercilessly adverb
mercilessness noun

More from Merriam-Webster on merciless

Last Updated: - Updated example sentences
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