relentless

adjective

re·​lent·​less ri-ˈlent-ləs How to pronounce relentless (audio)
Synonyms of relentlessnext
: showing or promising no abatement of severity, intensity, strength, or pace : unrelenting
relentless pressure
a relentless campaign
relentlessly adverb
relentlessness noun

Examples of relentless in a Sentence

Her relentless optimism held the team together. The hunter was relentless in pursuit of his prey. a relentless opponent of deregulation
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.
That insight later launched a relentless scientific quest called artificial intelligence. Fei-Fei Li, Time, 11 Dec. 2025 Somalia, Sudan, Eritrea, Mali, Chad, Yemen, Burkina Faso and the Democratic Republic of Congo suffer relentless raids and church massacres that have displaced millions. Nuri Kino, MSNBC Newsweek, 11 Dec. 2025 An outsider fueled by relentless determination works his way into the inner circle of the Wu-Tang Clan, where his ambition and creativity converge in the making of an album poised to ignite global controversy. Ryan Lattanzio, IndieWire, 10 Dec. 2025 This relentless pursuit of holiday perfection alienates Claire from her eldest daughter and fuels her own stress and anguish, too. Helen Carefoot, Flow Space, 9 Dec. 2025 See All Example Sentences for relentless

Word History

First Known Use

1592, in the meaning defined above

Time Traveler
The first known use of relentless was in 1592

Browse Nearby Words

Cite this Entry

“Relentless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/relentless. Accessed 16 Dec. 2025.

Kids Definition

relentless

adjective
re·​lent·​less ri-ˈlent-ləs How to pronounce relentless (audio)
: not lessening in severity, intensity, strength, or pace : unrelenting
relentless criticism
relentlessly adverb
relentlessness noun

More from Merriam-Webster on relentless

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!