1
duped(wrong, false, incorrect)
1
elusory
1
empty
1
ersatz(adjective, wrong, fake, counterfeit, dishonest)
1
extreme(adjective, defended, verbal attack)
1
fake(adjective, wrong, false, counterfeit, dishonest)
1
fanciful(adjective, wrong, fake, wild, counterfeit)
1
fantastical
1
fictive
1
fishy(adjective, wrong, fake, false, counterfeit)
1
flimsy
1
fooled(wrong, false, incorrect)
1
foundationless
1
fraudulent(adjective, wrong, fake, false, counterfeit)
1
garbled
1
hazardous
1
hypothetical
1
ill-advised(wrong, false, incorrect)
1
ill-founded
1
ill founded(expression, idiom)
11 years ago|13k views|share |citing 
APASmart Define. (2015). unfounded thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unfounded/thesaurus/synonyms
ChicagoSmart Define. 2015. "unfounded thesaurus" https://smartdefine.org/unfounded/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, unfounded thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unfounded/thesaurus/synonyms>.
MLASmart Define. "unfounded thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/unfounded/thesaurus/synonyms>