62 entries under adjective topic. ×

9
merciless(mean, hard, kind, gentle)
8
cruel(good, mean, hard, kind)
8
atrocious
6
unmerciful(mean, hard, cruel)
5
harsh(good, mean, hard, agreeable)
5
heartless(gentle, friendly)
5
inhuman(good, kind)
5
inhumane(mean, hard, gentle, refined)
4
pitiless(care, mercy)
4
hardhearted
4
ruthless(calm, gentle)
4
unforgiving(mean, hard, kind, gentle)
3
barbarous(gentle, refined)
3
brutal
3
cold-blooded(kind, gentle, cruel, heartless)
3
fierce
3
hard(mean, kind, gentle, bright)
2
mean(verb, hard)
2
narcissistic
2
remorseless
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APASmart Define. (2016). merciful thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/merciful/thesaurus/antonyms
ChicagoSmart Define. 2016. "merciful thesaurus" https://smartdefine.org/merciful/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2016, merciful thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/merciful/thesaurus/antonyms>.
MLASmart Define. "merciful thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/merciful/thesaurus/antonyms>