104 entries under adjective topic. ×
| unofficial | |
| back-door | |
| foul | |
| guilty(legal, forbidden) | |
| heavy(wrong, informal, irregular, senseless) | |
| interdicted | |
| off-limits(adverb, prohibited, not) | |
| off limits | |
| out of bounds(expression, idiom) | |
| proscribed | |
| tabu | |
| villainous(wrong, wicked, criminal, illegal) | |
| wicked(wrong, criminal, illegal, unlawful) | |
| bad | |
| bent(wrong, senseless, illegal, unlawful) | |
| disallowed | |
| evil | |
| fraudulent(hidden, sly) | |
| in violation of law(expression, idiom, legal, illegal) | |
| 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> |