60 entries under hard topic. ×

32
cruel(adjective, person, mean, severe)
21
merciless(adjective, mean, tough, severe)
17
inhuman(adjective, animal, person, mean)
16
pitiless(adjective, animal, person, mean)
16
ruthless(adjective, animal, mean, tough)
14
savage(adjective, animal, mean, tough)
13
barbarous(adjective, animal, mean, tough)
13
cold(adjective, person, mean, evil)
13
cold-blooded(adjective, person, mean, evil)
10
heartless(adjective, mean, severe, evil)
10
uncompassionate(adjective, animal, mean, evil)
10
vindictive(adjective, person, tough, severe)
9
insensitive(adjective, mean, tough, harsh)
9
unmerciful(adjective, mean, tough, severe)
8
grim(adjective, animal, person, mean)
8
unforgiving(adjective, person, mean, tough)
7
callous(adjective, mean, severe, evil)
6
frigid(adjective, person, mean, harsh)
6
remorseless(adjective, animal, mean, severe)
5
hard-hearted(adjective, mean, tough, evil)
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APASmart Define. (2016). inhumane thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/inhumane/thesaurus/synonyms
ChicagoSmart Define. 2016. "inhumane thesaurus" https://smartdefine.org/inhumane/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, inhumane thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/inhumane/thesaurus/synonyms>.
MLASmart Define. "inhumane thesaurus" 31 March 2016. Web. 24 September 2026. <https://smartdefine.org/inhumane/thesaurus/synonyms>