4
vile(adjective, bad, wrong, evil, corrupt)
4
villainous(adjective, wrong, corrupt, wicked, depraved)
3
blameworthy(adjective, wicked, dishonest, immoral, unwarranted)
3
cheating(adjective, bad, wrong, corrupt, dishonest)
3
depraved(adjective, wrong, corrupt, wicked, immoral)
3
disreputable(adjective, bad, wrong, dishonest, immoral)
3
dissolute(adjective, wrong, corrupt, wicked, dishonest)
3
doubtful
3
dubious
3
fake(adjective, bad, wrong, dishonest, immoral)
3
felonious
3
impure(adjective, wrong, evil, corrupt, wicked)
3
insidious(adjective, dishonest, cunning, deceitful, sneaky)
3
naughty(adjective, wrong, rude, vulgar, immoral)
3
nefarious(adjective, bad, wrong, evil, corrupt)
3
perverted
3
questionable
3
reprehensible(adjective, rude, immoral, shocking, indecent)
3
slick(adjective, wrong, informal, dishonest, immoral)
3
suspicious
11 years ago|14k views|share |citing 
APASmart Define. (2015). unethical thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unethical/thesaurus/synonyms
ChicagoSmart Define. 2015. "unethical thesaurus" https://smartdefine.org/unethical/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, unethical thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unethical/thesaurus/synonyms>.
MLASmart Define. "unethical thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/unethical/thesaurus/synonyms>