7 entries under adverb topic. ×

18
banned(verb, adjective, irregular, restricted)
17
illegal(adjective, offensive, permitted, illegitimate)
14
taboo(adjective, offensive, irregular, unwarranted)
12
outlawed(verb, adjective, irregular, unwarranted)
10
illicit(adjective, irregular, unwarranted, legal)
3
out of bounds(expression, adjective, idiom, offensive)
2
off-limits(adjective, not)
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APASmart Define. (2015). prohibited thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/prohibited/thesaurus/synonyms
ChicagoSmart Define. 2015. "prohibited thesaurus" https://smartdefine.org/prohibited/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, prohibited thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/prohibited/thesaurus/synonyms>.
MLASmart Define. "prohibited thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/prohibited/thesaurus/synonyms>