11 entries under unthinkable topic. ×

17
illegal(adjective, adverb, offensive, unreasonable, improper)
6
unmentionable(adjective, offensive, permitted, prohibited, unspeakable)
5
restricted(verb, adjective, offensive, permitted, prohibited)
5
unacceptable(adjective, offensive, permitted, prohibited)
3
disapproved(verb, adjective, offensive, permitted, prohibited)
2
anathema(adjective, offensive, permitted, prohibited)
2
not allowed(expression, idiom, offensive, permitted, prohibited)
2
ruled out(expression, offensive, permitted, prohibited)
0
frowned on(expression, offensive, permitted, prohibited)
0
permitted(offensive, prohibited, unmentionable)
0
reserved(offensive, permitted, prohibited, unmentionable)
11 years ago|11k views|share |citing 
APASmart Define. (2015). forbidden thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/forbidden/thesaurus/synonyms
ChicagoSmart Define. 2015. "forbidden thesaurus" https://smartdefine.org/forbidden/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, forbidden thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/forbidden/thesaurus/synonyms>.
MLASmart Define. "forbidden thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/forbidden/thesaurus/synonyms>