10
unethical(adjective, good, dishonest, immoral)
10
sinful
9
dishonest(adjective, good, open, honest, lying)
9
shameful
8
corrupt(adjective, good, moral, unethical)
7
immoral(adjective, good, moral, unethical)
7
improper(adjective, fair, unethical)
7
outrageous
6
dishonorable
6
shy
6
unprincipled(adjective, good, honest, corrupt)
5
unjust(adjective, unethical)
5
unrighteous(adjective, good, right, unethical)
4
criminal(adjective, good, legal)
4
crooked
4
disreputable(adjective, dishonorable, reputable, lowly)
4
unfair(adjective, good, honest)
4
depraved
3
black
3
dissolute
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APASmart Define. (2015). ethical thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/ethical/thesaurus/antonyms
ChicagoSmart Define. 2015. "ethical thesaurus" https://smartdefine.org/ethical/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2015, ethical thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/ethical/thesaurus/antonyms>.
MLASmart Define. "ethical thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/ethical/thesaurus/antonyms>