46 entries under severe topic. ×

15
unrelenting(adjective, mean, harsh, cruel)
14
implacable(adjective, mean, harsh, cruel)
14
inexorable(adjective, mean, harsh, cruel)
14
relentless(adjective, mean, harsh, cruel)
12
grim(adjective, mean, harsh, cruel)
11
stern(adjective, mean, harsh, cruel)
11
unforgiving(adjective, mean, harsh, cruel)
6
unyielding(adjective, mean, harsh, cruel)
4
ruthless(adjective, mean, harsh, cruel)
3
hard(adjective, mean, harsh, cruel)
3
mortal(adjective, mean, harsh, cruel)
3
pitiless(adjective, mean, harsh, cruel)
2
unflinching(adjective, mean, harsh, cruel)
2
harsh(adjective, mean, cruel, determined)
1
barbarous(adjective, mean, harsh, cruel)
1
callous(adjective, mean, harsh, cruel)
1
compassionless(adjective, mean, harsh, cruel)
1
cutthroat(adjective, mean, harsh, cruel)
1
dog-eat-dog(adjective, mean, harsh, cruel)
1
fierce(adjective, mean, harsh, cruel)
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APASmart Define. (2015). unappeasable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/unappeasable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unappeasable thesaurus" https://smartdefine.org/unappeasable/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, unappeasable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/unappeasable/thesaurus/synonyms>.
MLASmart Define. "unappeasable thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/unappeasable/thesaurus/synonyms>