7
wrong(adjective, dishonest, immoral, criminal, aberrant)
6
foul(adjective, vice)
5
unauthorized(adjective, illegal)
5
bad(adjective, wicked)
5
bootleg(adjective, illegal)
5
sinful(adjective, wicked)
5
unconstitutional(adjective, illegal)
5
unprincipled
5
vicious(adjective, wrong, illegal, unlawful)
5
vile(adjective, vice)
4
actionable(adjective, illegal)
4
depraved(adjective, wicked)
4
dishonourable
4
flagitious(adjective, vice)
4
forbidden(adjective, illegal)
4
guilty(adjective, blameworthy)
4
miscreant
4
outlawed
4
perfidious
4
punishable(adjective, illegal)
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APASmart Define. (2015). felonious thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/felonious/thesaurus/synonyms
ChicagoSmart Define. 2015. "felonious thesaurus" https://smartdefine.org/felonious/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, felonious thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/felonious/thesaurus/synonyms>.
MLASmart Define. "felonious thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/felonious/thesaurus/synonyms>