15 entries under offensive topic. ×

17
illegal(adjective, adverb, permitted, illegitimate)
14
taboo(adjective, adverb, irregular, unwarranted)
9
restricted(verb, adjective, permitted, unthinkable)
5
unacceptable(adjective, permitted, unthinkable, unmentionable)
4
disapproved(verb, adjective, permitted, unthinkable)
4
off limits(expression, adjective, idiom, illegal)
3
not allowed(expression, idiom, illegal, permitted)
3
out of bounds(expression, adjective, idiom, adverb)
3
unthinkable(permitted, prohibition, unmentionable)
2
anathema(adjective, permitted, unthinkable, unmentionable)
2
beyond the pale(expression, idiom, restricted, permitted)
2
ruled out(expression, permitted, unthinkable, unmentionable)
2
unmentionable(adjective, permitted, unthinkable)
0
frowned on(expression, permitted, unthinkable, unmentionable)
0
reserved(permitted, unthinkable, unmentionable)
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APASmart Define. (2015). prohibited thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/prohibited/thesaurus/synonyms
ChicagoSmart Define. 2015. "prohibited thesaurus" https://smartdefine.org/prohibited/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, prohibited thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/prohibited/thesaurus/synonyms>.
MLASmart Define. "prohibited thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/prohibited/thesaurus/synonyms>