45 entries under severe topic. ×

2
inexorable(adjective, mean, hard, harsh)
2
relentless(adjective, mean, hard, harsh)
2
steely(adjective, harsh, cold, unfeeling)
1
austere(adjective, mean, hard, harsh)
1
barbarous(adjective, mean, hard, harsh)
1
fierce(adjective, mean, harsh, cruel)
1
gratuitous(adjective, mean, harsh, cruel)
1
hatchet job(expression, adjective, mean, harsh)
1
having a killer instinct(expression, adjective, idiom, mean)
1
implacable(adjective, mean, hard, harsh)
1
inflexible(adjective, hard, harsh, careless)
1
iron-fisted(adjective, mean, harsh, cruel)
1
mean machine(expression, adjective, mean, harsh)
1
mortal(adjective, mean, harsh, cruel)
1
unappeasable(adjective, mean, harsh, cruel)
1
uncalled-for(adjective, mean, harsh, cruel)
1
unflinching(adjective, mean, harsh, cruel)
1
unrelenting(adjective, mean, harsh, cruel)
1
unsparing(adjective, mean, harsh, cruel)
1
unyielding(adjective, mean, harsh, cruel)
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APASmart Define. (2016). hardhearted thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/hardhearted/thesaurus/synonyms
ChicagoSmart Define. 2016. "hardhearted thesaurus" https://smartdefine.org/hardhearted/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, hardhearted thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/hardhearted/thesaurus/synonyms>.
MLASmart Define. "hardhearted thesaurus" 31 March 2016. Web. 25 September 2026. <https://smartdefine.org/hardhearted/thesaurus/synonyms>