142 entries under adjective topic. ×

26
illicit(law, right, irregular, unwarranted)
25
illegal(adverb, law, wrong, corrupt)
22
illegitimate(law, wrong, corrupt, vicious)
18
criminal(wrong, corrupt, wicked, dishonest)
17
wrongful(law, evil, wicked, dishonest)
14
crooked(wrong, corrupt, vicious, wicked)
14
lawless(law, irregular, unwarranted, criminal)
13
outlawed(law, crimes)
12
forbidden(verb, illegal)
12
unauthorized(illegal, permitted, sanctioned, undueness)
11
improper(dishonest, extreme, stiff, extravagant)
10
felonious(wrong, irregular, unwarranted, criminal)
10
prohibited
10
unfair(wrong, wicked, dishonest, extreme)
9
undue(unreasonable, extreme, improper, senseless)
8
actionable(illegal, illegality)
8
banned
8
outlaw
8
unconstitutional(illegal, undueness)
8
unlicensed
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APASmart Define. (2015). unlawful thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/unlawful/thesaurus/synonyms
ChicagoSmart Define. 2015. "unlawful thesaurus" https://smartdefine.org/unlawful/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, unlawful thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/unlawful/thesaurus/synonyms>.
MLASmart Define. "unlawful thesaurus" 13 April 2015. Web. 30 September 2026. <https://smartdefine.org/unlawful/thesaurus/synonyms>