96 entries under harsh topic. ×

9
savage(adjective, mean, hard, tough)
9
unsparing(adjective, mean, severe, cruel)
9
unsympathetic(adjective, mean, severe, cruel)
8
dog-eat-dog(adjective, mean, severe, cruel)
8
unrelenting(adjective, mean, hard, tough, severe)
7
bloodthirsty(adjective, severe, violent, cruel)
7
ferocious(adjective, mean, violent, cruel)
7
inexorable(adjective, mean, hard, tough, severe)
7
unyielding(adjective, mean, hard, tough, severe)
6
barbarous(adjective, mean, hard, tough, severe)
6
fierce(adjective, mean, hard, tough, severe)
6
implacable(adjective, mean, hard, tough, severe)
6
inhuman(adjective, mean, hard, tough)
6
vicious(adjective, mean, violent, cruel)
5
bloody(adjective, hard, tough, cruel)
5
cold(adjective, mean, cruel, vicious)
5
insensitive(adjective, hard, tough, cruel)
5
mean(adjective, severe, cruel, vicious)
5
severe(adjective, mean, cruel, vicious)
4
obdurate(adjective, mean, hard, tough)
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APASmart Define. (2016). unmerciful thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unmerciful/thesaurus/synonyms
ChicagoSmart Define. 2016. "unmerciful thesaurus" https://smartdefine.org/unmerciful/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, unmerciful thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unmerciful/thesaurus/synonyms>.
MLASmart Define. "unmerciful thesaurus" 31 March 2016. Web. 27 September 2026. <https://smartdefine.org/unmerciful/thesaurus/synonyms>