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Definition of merciless

merciless

/ˈmɝː.sɪ.ləs/
mer · ci · less
Adverb:mercilessly
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merciless Lexical Profile

merciless Game Scores & Validity

• adjective

1

Showing no mercy, pity, or compassion toward others; harsh and unforgiving.

Example

"The panel of judges was merciless in its critique of the poorly prepared proposal."

2

Unrelenting, severe, or intense in effect, with no relief or moderation (especially of weather, heat, or physical conditions).

Example

"The hikers sought shelter in the canyon to escape the merciless afternoon sun."

Synonyms
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Antonyms
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• Nearby Words

merciful
mercifully
mercifulness
merciless
mercilessly
mercilessness
mercurial

Word Origin & Etymology

Formed in Middle English during the late 14th century by combining the noun 'mercy' (from Old French 'merci', ultimately from Latin 'merces' meaning 'reward, wages, or favor') with the Old English privative suffix '-less'.

Cite this Entry

Wordmom. (2026). Definition of Merciless. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/merciless
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