Synonyms|21Antonyms|0|Broader|0Narrower|0Related|2
2
baseless
2
empty
2
groundless
2
idle
2
unsupported
2
unsustainable
1
unfounded
1
ungrounded
1
unsustained
1
untenable
1
unwarranted
1
vain
1
without foundation
0
erroneous
0
invalid(adjective, worthless, unfounded)
0
uncorroborated
0
unjustified
0
unproven
0
unsound
0
unsubstantiated
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APASmart Define. (2015). ill-founded thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/ill-founded/thesaurus/synonyms
ChicagoSmart Define. 2015. "ill-founded thesaurus" https://smartdefine.org/ill-founded/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, ill-founded thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/ill-founded/thesaurus/synonyms>.
MLASmart Define. "ill-founded thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/ill-founded/thesaurus/synonyms>