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 funniest movie ever made about the experience of being snubbed for an Oscar nomination, For Your Consideration found Christopher Guest and company moving away from their patented mockumentary format for this hilarious and merciless satire.
—
Samantha Bergeson, IndieWire, 22 Jan. 2025
But some part of her yearns to be merciless—to make all these women confess.
—Dan Piepenbring, Harper's Magazine, 2 Jan. 2025
The community that had long been home to hundreds of entertainment industry workers was engulfed by a wildfire whipped into a merciless inferno by 80-mile an hour winds.
—Cynthia Littleton, Variety, 13 Jan. 2025
Scarcity of food and clean water have become merciless tormentors, and the numbers tell a story that words cannot fully convey.
—Daphne Ewing-Chow, Forbes, 5 Jan. 2025
See all Example Sentences for merciless 
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Samantha Bergeson, IndieWire, 22 Jan. 2025
But some part of her yearns to be merciless—to make all these women confess.
—Dan Piepenbring, Harper's Magazine, 2 Jan. 2025
The community that had long been home to hundreds of entertainment industry workers was engulfed by a wildfire whipped into a merciless inferno by 80-mile an hour winds.
—Cynthia Littleton, Variety, 13 Jan. 2025
Scarcity of food and clean water have become merciless tormentors, and the numbers tell a story that words cannot fully convey.
—Daphne Ewing-Chow, Forbes, 5 Jan. 2025
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 29 Jan. 2025.
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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