6
restricted(adjective, adverb, prohibited, not)
5
forbidden(adjective, adverb, prohibited, not)
5
taboo(adjective, adverb, prohibited, not)
4
banned(adjective, adverb, prohibited, not)
4
illegal(adjective, adverb, prohibited, not)
4
out-of-bounds
2
illicit(adjective, adverb, prohibited, not)
2
not allowed(expression, adjective, adverb, offensive, prohibited)
2
out of bounds(adjective, adverb, prohibited, not)
2
outlawed(adjective, adverb, prohibited, not)
2
prohibited(adjective, adverb, not)
1
frowned on
1
unlawful(adjective, adverb, prohibited, not)
1
unmentionable(adjective, unspeakable)
0
barred(adjective, adverb, prohibited, not)
0
against the law(adjective, prohibited)
0
anathema
0
beyond the pale
0
disapproved
0
distasteful
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APASmart Define. (2013). off-limits thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/off-limits/thesaurus/synonyms
ChicagoSmart Define. 2013. "off-limits thesaurus" https://smartdefine.org/off-limits/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2013, off-limits thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/off-limits/thesaurus/synonyms>.
MLASmart Define. "off-limits thesaurus" 28 June 2013. Web. 21 September 2026. <https://smartdefine.org/off-limits/thesaurus/synonyms>