51 entries under adjective topic. ×

10
illegal(good, false, improper, legal)
6
illegitimate(good, false, improper, legal)
4
invalid(false, improper, unlawful)
3
criminal(good, legal)
2
illicit(legal, forbidden)
2
incorrect(false, improper, unlawful)
2
unauthorized
2
unconstitutional
2
unwarranted(false, improper, unlawful)
1
unlawful(good, false, improper, lawful)
1
false(improper, unlawful)
1
lawless(reckless, ungoverned)
1
misbegotten(illegitimate, illicit)
1
iniquitous
1
spurious
1
wrongful
1
counterfeit(false, improper, unlawful)
1
improper(false, unlawful)
1
dishonest(false, improper, unlawful)
1
disorderly
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APASmart Define. (2016). legitimate thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/legitimate/thesaurus/antonyms
ChicagoSmart Define. 2016. "legitimate thesaurus" https://smartdefine.org/legitimate/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2016, legitimate thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/legitimate/thesaurus/antonyms>.
MLASmart Define. "legitimate thesaurus" 31 March 2016. Web. 26 September 2026. <https://smartdefine.org/legitimate/thesaurus/antonyms>