| illegitimate(adjective, illegality) | |
| impermissible | |
| not allowed(expression, idiom, offensive, illegal, permitted) | |
| out of bounds(expression, adjective, idiom, adverb, offensive) | |
| suppressed(verb, adjective) | |
| unlicensed(adjective, prohibition) | |
| unthinkable(offensive, permitted, prohibition, unmentionable) | |
| amputated(verb, adjective, excluded) | |
| anathema(adjective, offensive, permitted, unthinkable, unmentionable) | |
| banished(verb, adjective, excluded) | |
| beyond the pale(expression, idiom, offensive, restricted, permitted) | |
| blacklisted(verb, adjective, excluded) | |
| constrained(verb, adjective) | |
| controlled(verb, adjective) | |
| criminal | |
| curtailed(verb, adjective) | |
| dirty | |
| disbarred(verb, adjective, excluded) | |
| eliminated(verb, adjective, excluded) | |
| eradicated(verb, adjective, excluded) |
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| APA | Smart Define. (2015). prohibited thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/prohibited/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "prohibited thesaurus" https://smartdefine.org/prohibited/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, prohibited thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/prohibited/thesaurus/synonyms>. |
| MLA | Smart Define. "prohibited thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/prohibited/thesaurus/synonyms> |