Synonyms
- affectless
- callous
- case-hardened
- cold-blooded
- compassionless
- desensitized
- hard
- hard-boiled
- hard-hearted
- heartless
- indurate
- inhuman
- inhumane
- insensate
- insensitive
- ironhearted
- obdurate
- pachydermatous
- pitiless
- remorseless
- ruthless
- slash-and-burn
- soulless
- stony
- stoney
- stonyhearted
- take-no-prisoners
- thick-skinned
- uncharitable
- unfeeling
- unmerciful
- unsparing
- unsympathetic
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
Yet, time is a merciless force that no one can escape.
—
Voice Of The People, New York Daily News, 9 July 2024
Given the chance to save his true love by sacrificing himself, Eric sets out to seek merciless revenge on their killers, traversing the worlds of the living and the dead to put the wrong things right.
—Samantha Bergeson, IndieWire, 2 July 2024
The ads for ‘Scary Movie 2’ proclaim, ‘More merciless.
—Mark Olsen, Los Angeles Times, 21 June 2024
There is a third, pessimistic scenario: the central government could reverse the loosening signals and local initiatives seen in the last two days and launch a merciless crackdown on all who have participated in civil disobedience.
—Yuen Yuen Ang, Foreign Affairs, 2 Dec. 2022
See all Example Sentences for merciless 
Voice Of The People, New York Daily News, 9 July 2024
Given the chance to save his true love by sacrificing himself, Eric sets out to seek merciless revenge on their killers, traversing the worlds of the living and the dead to put the wrong things right.
—Samantha Bergeson, IndieWire, 2 July 2024
The ads for ‘Scary Movie 2’ proclaim, ‘More merciless.
—Mark Olsen, Los Angeles Times, 21 June 2024
There is a third, pessimistic scenario: the central government could reverse the loosening signals and local initiatives seen in the last two days and launch a merciless crackdown on all who have participated in civil disobedience.
—Yuen Yuen Ang, Foreign Affairs, 2 Dec. 2022
See all Example Sentences for merciless
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'merciless.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Merciless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/merciless. Accessed 15 Jul. 2024.
Copy CitationKids Definition
merciless
adjective
mer·ci·less
ˈmər-si-ləs 
: having no mercy : pitiless
merciless slaughter
mercilessly
adverb
mercilessness
noun
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