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
The woman doubts what is happening to her, doubts her surroundings, doubts her recent experiences, but the boy urges her on, merciless.
—
Mikaella Clements & Onjuli Datta, Vulture, 1 Nov. 2024
But the ruthless cleaning up of those streets and merciless treatment of gang members have triggered outrage and concern among human rights organizations, which have condemned Cecot as inhumane and unacceptable.
—David Culver, CNN, 6 Nov. 2024
This special shorts program of new Spanish frights includes tales of merciless revenge, spine-chilling supernatural terrors and gut-wrenching body horror.
—Samantha Bergeson, IndieWire, 17 Sep. 2024
Tragedies like these were confrontations — merciless verbal duels in which two characters plead their case, go on the attack, try to take each other apart.
—Sara Holdren, Vulture, 23 Sep. 2024
See all Example Sentences for merciless 
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Mikaella Clements & Onjuli Datta, Vulture, 1 Nov. 2024
But the ruthless cleaning up of those streets and merciless treatment of gang members have triggered outrage and concern among human rights organizations, which have condemned Cecot as inhumane and unacceptable.
—David Culver, CNN, 6 Nov. 2024
This special shorts program of new Spanish frights includes tales of merciless revenge, spine-chilling supernatural terrors and gut-wrenching body horror.
—Samantha Bergeson, IndieWire, 17 Sep. 2024
Tragedies like these were confrontations — merciless verbal duels in which two characters plead their case, go on the attack, try to take each other apart.
—Sara Holdren, Vulture, 23 Sep. 2024
See all Example Sentences for merciless
Articles Related to merciless
Dictionary Entries Near merciless
Cite this Entry
“Merciless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/merciless. Accessed 22 Dec. 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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