9
deadly(adjective, awful, terrible, horrible, afraid)
9
desperate(adjective, hard, evil, rough, harsh)
9
fearful(adjective, awful, terrible, wicked, horrible)
9
furious(adjective, strong, severe, nasty, harsh)
9
gruesome(adjective, awful, terrible, horrible, afraid)
9
infamous(adjective, hard, wrong, evil, rough)
9
low(adjective, mean, bad, evil, nasty)
9
reprehensible(adjective, bad, wrong, evil, corrupt)
9
scandalous(adjective, bad, wrong, evil, offensive)
9
unprincipled(adjective, bad, open, light, wrong)
9
unspeakable(adjective, endured)
9
vindictive(adjective, mean, nasty, harsh, violent)
8
abhorrent(adjective, wrong, nasty, offensive, unpleasant)
8
acrimonious(hard, bitter, malicious, cutting, hurtful)
8
baleful(adjective, mean, bad, evil, nasty)
8
diabolical(adjective, wrong, evil, harsh, violent)
8
dire(adjective, unpleasant, awful, terrible, horrible)
8
heartless(adjective, mean, bad, wrong, evil)
8
inhumane(adjective, evil, nasty, harsh, rude)
8
mischievous(adjective, mean, bad, wrong, evil)
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APASmart Define. (2016). vicious thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/vicious/thesaurus/synonyms
ChicagoSmart Define. 2016. "vicious thesaurus" https://smartdefine.org/vicious/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, vicious thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/vicious/thesaurus/synonyms>.
MLASmart Define. "vicious thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/vicious/thesaurus/synonyms>