- Definitions|2
- Thesaurus|292
- Abbreviations|0
56 entries under adjective topic. ×
| illegal | |
| contraband(prohibition, forbidden) | |
| illicit | |
| intolerable | |
| banned | |
| forbidden | |
| inadmissible | |
| taboo(allow, informal, forbidden) | |
| verboten(allow, forbidden) | |
| illegitimate | |
| proscribed | |
| unbearable | |
| unmentionable | |
| unwarrantable(outrageous, intolerable) | |
| criminal | |
| inexcusable | |
| unallowable(outrageous, intolerable) | |
| unendurable | |
| unwarranted | |
| blamable(outrageous, intolerable) |
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| APA | Smart Define. (2015). impermissible thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/impermissible/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "impermissible thesaurus" https://smartdefine.org/impermissible/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, impermissible thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/impermissible/thesaurus/synonyms>. |
| MLA | Smart Define. "impermissible thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/impermissible/thesaurus/synonyms> |