74 entries under tough topic. ×

45
cruel(adjective, animal, mean, hard, kind)
40
savage(adjective, animal, mean, hard, kind)
39
brutal(adjective, adverb, animal, person, mean)
33
barbarous(adjective, adverb, animal, mean, hard)
29
ruthless(adjective, animal, mean, hard)
28
pitiless(adjective, animal, person, mean, hard)
27
heartless(verb, adjective, animal, mean, feeling)
24
merciless(adjective, animal, mean, hard)
23
cold-blooded(adjective, animal, mean, bad, hard)
20
fierce(verb, adjective, animal, mean, hard)
20
callous(adjective, mean, bad, hard)
18
unsympathetic(adjective, animal, person, mean, bad)
17
unkind(adjective, animal, mean, bad, hard)
16
harsh(adjective, mean, hard, evil)
16
inhumane(adjective, animal, person, mean, hard)
16
severe(adjective, person, mean, hard)
14
insensitive(adjective, mean, bad, hard)
13
cold(adjective, mean, hard, severe)
13
hard-hearted(adjective, mean, bad, hard)
13
murderous(adjective, hard, harsh, violent)
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APASmart Define. (2016). inhuman thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/inhuman/thesaurus/synonyms
ChicagoSmart Define. 2016. "inhuman thesaurus" https://smartdefine.org/inhuman/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, inhuman thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/inhuman/thesaurus/synonyms>.
MLASmart Define. "inhuman thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/inhuman/thesaurus/synonyms>