80 entries under harsh topic. ×

1
unfeeling(adjective, mean, severe, cruel)
1
unmerciful(adjective, mean, severe, cruel)
1
unpitying(adjective, mean, severe, cruel)
1
unsparing(adjective, mean, severe, cruel)
1
unstoppable(adjective, cruel, determined, fierce)
1
unsympathetic(adjective, mean, severe, cruel)
1
wanton(adjective, mean, severe, cruel)
0
cold(adjective, mean, cruel, vicious)
0
cold-blooded(adjective, mean, cruel, vicious)
0
feral(adjective, mean, severe, cruel)
0
hard-hearted(adjective, mean, severe, cruel)
0
malevolent(adjective, mean, cruel, vicious)
0
sadistic(adjective, mean, cruel, vicious)
0
savage(adjective, mean, cruel, vicious)
0
uncalled for(expression, mean, severe, heartless)
-1
killer(adjective, mean, severe, cruel)
-1
stony(adjective, mean, severe, cruel)
-1
surly(adjective, mean, severe, cruel)
-1
vicious(adjective, mean, cruel, brutal)
-1
without pity(expression, adjective, mean, severe)
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APASmart Define. (2015). unappeasable thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unappeasable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unappeasable thesaurus" https://smartdefine.org/unappeasable/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, unappeasable thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unappeasable/thesaurus/synonyms>.
MLASmart Define. "unappeasable thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/unappeasable/thesaurus/synonyms>