1
man-made
1
mean
1
meanspirited
1
meretricious
1
misappropriated
1
misbegot
1
misbranded
1
miscreated
1
mongrel(noun, adjective, inferior)
1
naughty
1
nonconstitutional
1
nonlegal
1
nonlicit
1
off base(expression, wrong, senseless, illegal, permitted)
1
on the quiet(expression, idiom, hidden, sly, fraudulent)
1
out of bounds(expression, adjective, idiom, extreme, improper)
1
out of line(expression, wrong, senseless, illegal, permitted)
1
overkill(adjective, unreasonable, extreme, improper, stiff)
1
peremptory(adjective, unreasonable, extreme, improper, stiff)
1
perverted
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APASmart Define. (2015). illegitimate thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/illegitimate/thesaurus/synonyms
ChicagoSmart Define. 2015. "illegitimate thesaurus" https://smartdefine.org/illegitimate/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, illegitimate thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/illegitimate/thesaurus/synonyms>.
MLASmart Define. "illegitimate thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/illegitimate/thesaurus/synonyms>