14 entries under expression topic. ×

4
off limits(adjective, idiom, offensive, illegal)
3
not allowed(idiom, offensive, illegal, permitted)
3
out of bounds(adjective, idiom, adverb, offensive)
2
beyond the pale(idiom, offensive, restricted, permitted)
2
not permitted(idiom, prohibition)
2
ruled out(offensive, permitted, unthinkable, unmentionable)
1
against the law(adjective, idiom)
1
contrary to reason
1
is prohibited
1
not in it
1
under the ban
0
frowned on(offensive, permitted, unthinkable, unmentionable)
0
illicit intercourse
0
illicit pleasure
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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>