20
immoral(adjective, bad, wrong, evil, rude)
19
unprincipled(adjective, bad, wrong, evil, low)
18
unscrupulous(adjective, bad, wrong, honest, corrupt)
16
dishonest(adjective, bad, wrong, corrupt, wicked)
13
crooked(adjective, bad, wrong, corrupt, wicked)
13
dishonorable(adjective, bad, wrong, corrupt, wicked)
13
sinful(adjective, bad, wrong, evil, corrupt)
13
unconscionable(adjective, honest, corrupt, dishonest, immoral)
12
wrong(adjective, rude, corrupt, vulgar, dishonest)
11
corrupt(adjective, bad, wrong, evil, wicked)
10
dishonourable
10
wicked(adjective, bad, wrong, evil, corrupt)
10
yellow(adjective, low, cowardly)
9
deceitful(adjective, low, corrupt, wicked, dishonest)
9
unfair(adjective, bad, wrong, corrupt, wicked)
8
conscienceless(adjective, honest, corrupt, dishonest, immoral)
8
evil(adjective, bad, wrong, corrupt, wicked)
8
illegal(adjective, bad, wrong, corrupt, wicked)
8
shady(adjective, bad, wrong, informal, corrupt)
8
sneaky(adjective, bad, wrong, informal, corrupt)
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APASmart Define. (2015). unethical thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/unethical/thesaurus/synonyms
ChicagoSmart Define. 2015. "unethical thesaurus" https://smartdefine.org/unethical/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, unethical thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/unethical/thesaurus/synonyms>.
MLASmart Define. "unethical thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/unethical/thesaurus/synonyms>