2
felonious(adjective, illegal)
2
not permitted(expression, idiom, prohibition)
2
wrongful(adjective, illegal)
1
actionable(adjective, illegal)
1
barred
1
black-market(irregular, unwarranted, criminal, illegal, illegitimate)
1
extralegal(irregular, unwarranted, criminal, illegal, illegitimate)
1
forbade
1
forbid
1
nonpermissible
1
not approved(expression, irregular, unwarranted, criminal, illegal)
1
not legal(expression, irregular, unwarranted, criminal, illegal)
1
off limits
1
offensive(adjective, illegal)
1
out of bounds(expression, idiom)
1
out of line(expression, idiom, illegal, illicit, unsanctioned)
1
outside the law(expression, irregular, unwarranted, criminal, illegal)
1
punishable(adjective, illegal)
1
racket(irregular, unwarranted, criminal, illegal, illegitimate)
1
ruled out
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APASmart Define. (2015). unlicensed thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/unlicensed/thesaurus/synonyms
ChicagoSmart Define. 2015. "unlicensed thesaurus" https://smartdefine.org/unlicensed/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, unlicensed thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unlicensed/thesaurus/synonyms>.
MLASmart Define. "unlicensed thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/unlicensed/thesaurus/synonyms>