relentless

adjective

ri-ˈlent-ləs How to pronounce relentless (audio)
Definition of relentlessnext
as in grim
showing no signs of slackening or yielding in one's purpose the team's offense was relentless in trying to score a touchdown

Synonyms & Similar Words

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Antonyms & Near Antonyms

Example Sentences

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.
Recent Examples of relentless In the last quarter-century, relentless drought intensified by climate change has sapped the river’s flow and left its reservoirs severely depleted. — Ian James, Los Angeles Times, 16 Oct. 2026 Kyiv recently found a way to counter the drones after weeks of relentless attacks that killed dozens of civilians. — ABC News, 16 Oct. 2026 Per the logline, what followed was years of unanswered questions, a missing teenager, and a mother’s relentless fight for the truth. — Peter White, Deadline, 15 Oct. 2026 No similar pressure appears to have been put on Russia, which has continued a relentless bombardment of Ukraine’s energy infrastructure that has cut off electricity, heat, and water supplies as winter looms. — Scott Peterson, Christian Science Monitor, 15 Oct. 2026 See All Example Sentences for relentless
Recent Examples of Synonyms for relentless
  1. grim
  2. determined
  3. persistent
  4. unrelenting
  5. ruthless
Adjective
  • But if Earth did somehow get supremely unlucky, and we were directly hit by a jet even a few thousand light-years away, our situation would be grim.
    — Robin George Andrews, Scientific American, 20 Oct. 2026
  • The political environment appears increasingly favorable for Democrats and grim for Republicans, meaning districts once considered locks for the GOP are suddenly in play.
    — Jamie Ross, Washington Post, 19 Oct. 2026
Definition of grim
Adjective
  • The overwhelming problem of plastic From flax that can be used in clothing and cars to robotic skimmers to stricter laws, determined researchers, activists and volunteers fight an industry intent on making more plastic.
    — Michael Hawthorne, Chicago Tribune, 22 Oct. 2026
  • That witness said Foss left a cellphone behind after their interaction, which was later determined to have belonged to Lussier.
    — Stephen Swanson, CBS News, 22 Oct. 2026
Definition of determined
Adjective
  • Those capabilities could help address a persistent challenge in counter-drone warfare.
    — Aamir Khollam, Interesting Engineering, 24 Oct. 2026
  • This cycle of price increases serves not only to offset immediate fuel price spikes, but also to make up for unadjusted pricing power lost in recent years due to flight overcapacity, fare suppression, and persistent inflation.
    — , CNBC, 23 Oct. 2026
Definition of persistent
Adjective
  • From there, Capra went to Sennett, in whose domain the pressure to provide a stream of funny business, on tap, was unrelenting.
    — Anthony Lane, New Yorker, 19 Oct. 2026
  • Amid unusual heat and unrelenting winds, hundreds of firefighters worked to contain several small, but destructive fires that ignited across Southern California.
    — Tony Briscoe, Los Angeles Times, 17 Oct. 2026
Definition of unrelenting
Adjective
  • The rest would kill her just for being her mother’s daughter—like Xaden Riorson, the most powerful and ruthless wingleader in the Riders Quadrant.
    — Lexy Perez, HollywoodReporter, 15 Oct. 2026
  • Facinelli plays the Boss, a ruthless figure whose cash ends up in the pool hustler’s hands, and intends to get it back, one way or another.
    — Zac Ntim, Deadline, 14 Oct. 2026
Definition of ruthless

Browse Nearby Words

relenting
relentless
relentlessness
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Cite this Entry

“Relentless.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/relentless. Accessed 24 Oct. 2026.

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