80 entries under illegal topic. ×

4
blameworthy(adjective, bad, evil, corrupt, wicked)
4
coarse(adjective, blue, evil, nasty, offensive)
4
illicit(adjective, wrong, wicked, legal, unfaithful)
4
ribald(adjective, blue, offensive, dirty, corrupt)
4
shifty(adjective, corrupt, dishonest, deceitful, crooked)
4
vulgar(adjective, evil, rude, base, dirty)
3
cheating(adjective, bad, wrong, corrupt, dishonest)
3
illegitimate(adjective, wrong, unlawful)
3
low(adjective, mean, bad, evil, base)
3
peccant(adjective, right, wrong, wicked, criminal)
3
scatological(adjective, blue, nasty, offensive, rude)
3
unjust(adjective, wrong, rude, wicked, vulgar)
3
unlawful(adjective, wrong, corrupt, vicious, wicked)
3
wrongful(adjective, wrong, evil, rude, corrupt)
2
contemptible(adjective, bad, wrong, evil, low)
2
culpable(adjective, bad, wrong, evil, corrupt)
2
deplorable(adjective, wrong, wicked, criminal)
2
off-color(adjective, offensive, rude, dirty, corrupt)
2
shady(adjective, bad, wrong, dirty, corrupt)
2
sneaky(adjective, bad, wrong, low, corrupt)
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APASmart Define. (2015). immoral thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/immoral/thesaurus/synonyms
ChicagoSmart Define. 2015. "immoral thesaurus" https://smartdefine.org/immoral/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, immoral thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/immoral/thesaurus/synonyms>.
MLASmart Define. "immoral thesaurus" 3 August 2015. Web. 27 September 2026. <https://smartdefine.org/immoral/thesaurus/synonyms>