- Definitions|1
- Thesaurus|351
- Abbreviations|0
81 entries under adjective topic. ×
| outlawed(offensive, permitted, prohibited, unthinkable) | |
| prohibited(offensive, permitted, unthinkable) | |
| proscribed(offensive, permitted, prohibited, unthinkable) | |
| shocking | |
| tabu | |
| abject | |
| bad | |
| contemptible | |
| execrable | |
| fulsome | |
| heinous | |
| indecorous | |
| inexpressible | |
| infamous | |
| inviolable | |
| out of bounds(expression, idiom, offensive, permitted) | |
| outrageous | |
| shabby | |
| squalid | |
| unacceptable(offensive, permitted, prohibited, unthinkable) |
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| APA | Smart Define. (2015). unmentionable thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unmentionable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unmentionable thesaurus" https://smartdefine.org/unmentionable/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, unmentionable thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unmentionable/thesaurus/synonyms>. |
| MLA | Smart Define. "unmentionable thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/unmentionable/thesaurus/synonyms> |