105 entries under fierce topic. ×

10
diabolical(adjective, evil, harsh, violent, terrible)
10
frightful(adjective, appearance, evil, unpleasant, awful)
10
truculent(adjective, appearance, strong, kind, severe)
9
obdurate(adjective, mean, strong, hard, cool)
9
rancorous(adjective, characteristic, mean, nasty, harsh)
9
rude(adjective, hard, severe, nasty, violent)
9
stiff(adjective, hard, severe, rough, harsh)
8
degenerate(adjective, characteristic, nasty, pain, violent)
8
foul(adjective, adverb, mean, evil, low)
8
inflexible(adjective, strong, hard, tough, severe)
8
vile(adjective, adverb, mean, evil, nasty)
7
rigid(adjective, strong, hard, tough, severe)
6
brute(adjective, adverb, low, base, violent)
6
devilish(adjective, evil, harsh, dark, violent)
6
mortal(adjective, mean, severe, harsh, awful)
6
unbending(adjective, strong, hard, tough, severe)
6
uncompromising(adjective, hard, severe, rough, harsh)
6
wild(adjective, strong, severe, rough, intense)
5
abhorrent(adjective, mean, nasty, unpleasant, awful)
5
destructive(adjective, harsh, violent, vicious)
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APASmart Define. (2016). cruel thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/cruel/thesaurus/synonyms
ChicagoSmart Define. 2016. "cruel thesaurus" https://smartdefine.org/cruel/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, cruel thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/cruel/thesaurus/synonyms>.
MLASmart Define. "cruel thesaurus" 24 March 2016. Web. 28 September 2026. <https://smartdefine.org/cruel/thesaurus/synonyms>