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Synonyms

unmerciful

American  
[uhn-mur-si-fuhl] / ʌnˈmɜr sɪ fəl /

adjective

  1. merciless; relentless; severe; cruel; pitiless.

  2. unsparingly great, extreme, or excessive, as amounts.

    to talk for an unmerciful length of time.


unmerciful British  
/ ʌnˈmɜːsɪfʊl /

adjective

  1. showing no mercy; relentless

  2. extreme or excessive

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of unmerciful

First recorded in 1475–85; un- 1 + merciful

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

On a bleak night, there was a moment of dark comedy when Brendan Rodgers sat down to assess the unmerciful hiding that had just been inflicted on his team.

From BBC Oct. 1, 2024

In March, Manchin told the Bluefield Daily Telegraph that the 4th Circuit "has been unmerciful on allowing any progress" by Mountain Valley Pipeline.

From Salon Aug. 5, 2022

Doing stand-up, Leggero is observational and unmerciful, lampooning everyone from Rite-Aid cashiers to typewriter-toting hipsters, a dumpster-diving Burning Man attendee named “Flapjack,” and, naturally, Kasher.

From Los Angeles Times Apr. 28, 2022

It took the huge and sudden migration of the Gold Rush for the tribe to be confronted by unmerciful invaders.

From Seattle Times Oct. 27, 2021

The Reverend Mr. Helmuth was pondering “this unmerciful enemy” as he made his way through the city.

From "An American Plague: The True and Terrifying Story of the Yellow Fever Epidemic of 1793" by Jim Murphy

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