137 entries under harsh topic. ×

6
unbending(adjective, hard, tough, rough)
6
unpitying(adjective, mean, hard, cool, severe)
5
hard-nosed(adjective, mean, hard, tough, evil)
5
unforgiving(adjective, person, mean, hard, severe)
5
unyielding(adjective, mean, hard, severe, rough)
4
bestial(adjective, evil, nasty, cruel)
4
brutish(adjective, hard, evil, nasty)
4
hostile(adjective, person, hard, tough, evil)
4
relentless(adjective, mean, hard, severe, evil)
4
unrelenting(adjective, mean, hard, tough, severe)
4
vicious(adjective, mean, hard, evil, rough)
3
compassionless(adjective, mean, hard, severe, attitude)
3
fierce(adjective, mean, hard, severe, evil)
3
hard-bitten(adjective, hard, rough, cruel)
3
implacable(adjective, mean, hard, severe, evil)
3
sadistic(adjective, mean, evil, nasty)
3
stubborn(adjective, mean, hard, tough, severe)
3
tyrannical(adjective, hard, tough, evil, nasty)
3
unsparing(adjective, mean, tough, severe)
2
coldblooded(adjective, mean, hard, cold)
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APASmart Define. (2016). callous thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/callous/thesaurus/synonyms
ChicagoSmart Define. 2016. "callous thesaurus" https://smartdefine.org/callous/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, callous thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/callous/thesaurus/synonyms>.
MLASmart Define. "callous thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/callous/thesaurus/synonyms>