104 entries under adjective topic. ×
| bootleg(legal, illegal, forbidden) | |
| clandestine(secret, sly, legal, forbidden) | |
| contraband(legal, unlawful, forbidden, illegality) | |
| furtive(hidden, legal, fraudulent, forbidden) | |
| taboo | |
| unconstitutional(illegal, undueness) | |
| against the law(expression, idiom, wrong, illegal) | |
| immoral(wrong, wicked, legal, unfaithful) | |
| unsanctioned | |
| black-market(irregular, unwarranted, criminal, legal) | |
| contrary to law(expression, idiom, legal, illegal) | |
| dirty(wrong, informal, wicked, senseless) | |
| irregular | |
| punishable | |
| corrupt(wrong, wicked, criminal, illegal) | |
| dishonest | |
| iniquitous(wrong, wicked, criminal, illegal) | |
| secret | |
| sneaky(sly, fraudulent) | |
| unjust |
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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> |