55 entries under illegal topic. ×
| immoral(adjective, wrong, wicked, legal, unfaithful) | |
| black-market(adjective, irregular, unwarranted, criminal, legal) | |
| contrary to law(expression, adjective, idiom, legal) | |
| dirty(adjective, wrong, informal, wicked, senseless) | |
| punishable | |
| corrupt(adjective, wrong, wicked, criminal) | |
| iniquitous(adjective, wrong, wicked, criminal) | |
| unjust | |
| heavy(adjective, wrong, informal, irregular, senseless) | |
| under-the-counter(hidden, sly, fraudulent, illegitimate) | |
| unwarrantable(irregular, unwarranted, criminal, illegitimate) | |
| villainous(adjective, wrong, wicked, criminal) | |
| wicked(adjective, wrong, criminal, unlawful) | |
| wildcat(wrong, irregular, senseless, unwarranted) | |
| bent(adjective, wrong, senseless, unlawful) | |
| extralegal(irregular, unwarranted, criminal, illegitimate) | |
| in violation of law(expression, adjective, idiom, legal) | |
| indictable(wrong, senseless, unlawful, lawless) | |
| not legal(expression, irregular, unwarranted, criminal) | |
| offensive |
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| APA | Smart Define. (2015). illicit thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/illicit/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "illicit thesaurus" https://smartdefine.org/illicit/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, illicit thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/illicit/thesaurus/synonyms>. |
| MLA | Smart Define. "illicit thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/illicit/thesaurus/synonyms> |