8 entries under irregular topic. ×

25
forbidden(verb, adjective, restricted, unwarranted)
18
banned(verb, adjective, adverb, restricted)
16
proscribed(verb, adjective, unwarranted, illegal)
14
taboo(adjective, adverb, offensive, unwarranted)
13
verboten(adjective, unwarranted, criminal, illegitimate)
12
outlawed(verb, adjective, adverb, unwarranted)
10
illicit(adjective, adverb, unwarranted, legal)
7
contraband(adjective, unwarranted, criminal, illegal)
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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>