3
unethical(adjective, wicked, dishonest, immoral, unwarranted)
3
unofficial
3
villainous(adjective, wrong, wicked, criminal, illegal)
2
amiss(adjective, wrong, defective)
2
bad(adjective, wrong, wicked, unreasonable, dishonest)
2
baseborn(adjective, law, kin)
2
blameworthy(adjective, cruel, wicked, unreasonable, dishonest)
2
contrary to law(expression, idiom)
2
culpable(adjective, wrong, corrupt, vicious, wicked)
2
dirty(adjective, wrong, wicked, senseless, criminal)
2
disqualified
2
foul(adjective, wrong, cruel, unreasonable, dishonest)
2
inequitable(adjective, cruel, unreasonable, dishonest, immoral)
2
off base(expression, wrong, senseless, illegal, lawless)
2
off limits
2
offensive(adjective, illegal)
2
out of line(expression, idiom, wrong, senseless, illegal)
2
pirate
2
racket(noun, wrong, irregular, senseless, unwarranted)
2
scandalous(wrong, wicked, criminal, illegal, heinous)
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APASmart Define. (2015). unlawful thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/unlawful/thesaurus/synonyms
ChicagoSmart Define. 2015. "unlawful thesaurus" https://smartdefine.org/unlawful/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, unlawful thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/unlawful/thesaurus/synonyms>.
MLASmart Define. "unlawful thesaurus" 13 April 2015. Web. 30 September 2026. <https://smartdefine.org/unlawful/thesaurus/synonyms>