6
undeserving
5
false(adjective, wrong, inveracity, illusoriness)
5
illegitimate(adjective, incorrect)
4
illegal(adjective, incorrect)
3
incorrect
3
wrongful(adjective, good, evil, incorrect, illegal)
2
unjust
2
unlawful(adjective, good, lawful)
1
biased
1
fraudulent
1
improper
1
inappropriate
1
inequitable
1
undeserved
1
undue
1
unfair
1
unmerited
1
unsuitable
1
unsustainable
1
unwarranted
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APASmart Define. (2016). rightful thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/rightful/thesaurus/antonyms
ChicagoSmart Define. 2016. "rightful thesaurus" https://smartdefine.org/rightful/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2016, rightful thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/rightful/thesaurus/antonyms>.
MLASmart Define. "rightful thesaurus" 31 March 2016. Web. 24 September 2026. <https://smartdefine.org/rightful/thesaurus/antonyms>