3
underhanded(adjective, dishonest)
3
unethical
3
unjust(adjective, illegal)
3
wrongdoing(adjective, wicked)
2
anarchic
2
anomic
2
awful
2
bent(adjective, wrong, senseless, illegal, unlawful)
2
chargeable
2
condemnable
2
contrary to law(expression, idiom)
2
damnable(adjective, wicked)
2
debased(adjective, wicked)
2
degenerate(adjective, wicked)
2
dubious
2
facinorous
2
felon
2
gross
2
heinous(adjective, vice)
2
ill-got
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APASmart Define. (2015). felonious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/felonious/thesaurus/synonyms
ChicagoSmart Define. 2015. "felonious thesaurus" https://smartdefine.org/felonious/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, felonious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/felonious/thesaurus/synonyms>.
MLASmart Define. "felonious thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/felonious/thesaurus/synonyms>