7
perverse(adjective, mean, bad, evil, low)
7
reprobate(adjective, bad, wrong, evil, violent)
6
awful(adjective, wicked)
6
despicable(adjective, good, evil, offensive, unpleasant)
6
devilish(adjective, wicked)
6
dreadful(adjective, bad, wicked, sinful)
6
egregious(adjective, bad, wrong, evil, nasty)
6
execrable(adjective, bad, wicked, immoral, malicious)
6
hideous(adjective, evil, dislike, disgusting, hate)
6
impure(adjective, evil, dislike, offensive, unpleasant)
6
malevolent(adjective, bad, evil, cruel, corrupt)
6
mean(adjective, good, wrong, evil, low)
6
miscreant(adjective, mean, bad, evil, low)
6
obnoxious(adjective, good, nasty, offensive, foul)
6
offensive(adjective, bad, evil, unpleasant, base)
6
wrong(adjective, corrupt, wicked, immoral, sinful)
5
cursed(adjective, dislike, disgusting, hate, yuck)
5
damnable(adjective, bad, evil, vile, wicked)
5
diabolic(adjective, evil, vile, wicked, fiendish)
5
disgusting(adjective, good, evil, offensive, unpleasant)
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APASmart Define. (2015). nefarious thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/nefarious/thesaurus/synonyms
ChicagoSmart Define. 2015. "nefarious thesaurus" https://smartdefine.org/nefarious/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, nefarious thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/nefarious/thesaurus/synonyms>.
MLASmart Define. "nefarious thesaurus" 8 October 2015. Web. 22 September 2026. <https://smartdefine.org/nefarious/thesaurus/synonyms>