Synonyms of merciless
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 poem that precedes it, the Iliad, is a cruel and beautiful work, the ultimate story of war; the Odyssey has its warlike passages, but its central energies seem almost commonplace beside the merciless fury of Achilles.
—
David Denby,
New Yorker,
21 June 2026
Humility is the posture; the standard is merciless.
—
Luis E. Romero,
Forbes.com,
19 June 2026
Having catalogued the Black Death’s horrifying effects, Ibn Khatima went on to outline a series of preventative measures and active treatments designed to combat this merciless scourge.
—
Literary Hub,
27 May 2026
The jokes on social media will be endless, and opposing fans will be merciless.
—
Fort Worth Star-Telegram,
20 May 2026
See All Example Sentences for merciless
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David Denby,
New Yorker,
21 June 2026
Humility is the posture; the standard is merciless.
—
Luis E. Romero,
Forbes.com,
19 June 2026
Having catalogued the Black Death’s horrifying effects, Ibn Khatima went on to outline a series of preventative measures and active treatments designed to combat this merciless scourge.
—
Literary Hub,
27 May 2026
The jokes on social media will be endless, and opposing fans will be merciless.
—
Fort Worth Star-Telegram,
20 May 2026
See All Example Sentences for merciless
Cite this Entry
“Merciless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/merciless. Accessed 29 Jun. 2026.
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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