Simple Definition of unmerciful

from our Learner's Dictionary

unmerciful

adjective

ˌʌnˈmɚsɪfəl

: not having or showing any mercy : very harsh or cruel : merciless

an unmerciful attack

unmerciful critics

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“Unmerciful.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/unmerciful. Accessed 19 Jun. 2026.

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