137 entries under harsh topic. ×

13
remorseless(adjective, mean, cold, cruel)
10
frigid(adjective, mean, hard, cool)
10
inflexible(adjective, person, hard, tough, rough)
10
severe(adjective, calm, mean, hard, tough)
9
barbarous(adjective, mean, hard, severe, evil)
9
stiff(adjective, set, strong, hard, severe)
9
unmerciful(adjective, mean, severe, cruel)
8
atrocious(adjective, evil, nasty, cruel)
8
firm(verb, adjective, close, set, fix)
8
rigid(adjective, set, mean, strong, hard)
7
flinty(adjective, evil, nasty, vicious)
7
impenitent(adjective, hard, tough, cruel)
7
mean(verb, adjective, hard, cool, tough)
7
savage(adjective, mean, hard, rough)
6
adamant(adjective, person, mean, hard, rough)
6
bloodthirsty(adjective, evil, nasty, cruel)
6
inhumane(adjective, mean, hard, severe, evil)
6
rough(verb, adjective, person, dull, hard)
6
soulless(adjective, mean, hard, cold)
6
stern(adjective, mean, hard, tough, severe)
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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>