unmerciful

adjective

un·​mer·​ci·​ful ˌən-ˈmər-si-fəl How to pronounce unmerciful (audio)
Synonyms of unmercifulnext
1
: not merciful : merciless
2
: excessive, extreme
chatted for an unmerciful length of time
unmercifully
ˌən-ˈmər-si-f(ə-)lē How to pronounce unmerciful (audio)
adverb

Synonyms of unmerciful

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Examples of unmerciful in a Sentence

she went into an unmerciful level of detail about her latest health problems the critics were unmerciful in their assessments of the young actress's performance
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
By that time, the internet blew up over Parker and Stone’s unmerciful comedic mockery of Trump. — Tim Lammers, Forbes.com, 30 July 2025 The result was unmerciful but gloriously funny, especially when Christine Baranski‘s liberal Diane Lockhart hallucinated news reports about Trump keeping a potbellied pig in the White House map room. — Lynette Rice, Deadline, 20 May 2025 The drought is a source of mockery towards RCB, with opposition fans unmerciful in their scorn towards them and particularly Kohli. — Tristan Lavalette, Forbes, 20 Mar. 2025 Yet viewers admire Oz’s aptitude to survive, his unmerciful resolve. — Jason Parham, WIRED, 26 Dec. 2024 See All Example Sentences for unmerciful

Word History

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of unmerciful was in the 15th century

Rhymes for unmerciful

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Browse Nearby Words

unmerchantable
unmerciful
unmerge
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Cite this Entry

“Unmerciful.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unmerciful. Accessed 7 Jul. 2026.

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Kids Definition

unmerciful

adjective
un·​mer·​ci·​ful ˌən-ˈmər-si-fəl How to pronounce unmerciful (audio)
ˈən-
: not merciful : merciless, cruel
unmercifully
-f(ə-)lē How to pronounce unmerciful (audio)
adverb

More from Merriam-Webster on unmerciful

Nglish: Translation of unmerciful for Spanish Speakers

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