9
unsustainable(adjective, true, real)
6
unprovable(adjective, true, real)
4
unobjective
3
indemonstrable(adjective, true, real)
3
legendary(adjective, mythical, fabled, mythological)
2
capricious
2
unsupportable(adjective, true, real)
1
agnostic
1
allegorical(mythical, fabled, mythological)
1
ambiguous
1
apocryphal(mythical, fabled, mythological)
1
chancy
1
changeable
1
created(mythical, fabled, mythological)
1
customary(mythical, fabled, mythological)
1
debatable(adjective, true, real)
1
dicey
1
disprovable(adjective, true, real)
1
disputable(adjective, true, real)
1
doubtful(mythical, fabled, mythological)
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APASmart Define. (2015). unverifiable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unverifiable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unverifiable thesaurus" https://smartdefine.org/unverifiable/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, unverifiable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unverifiable/thesaurus/synonyms>.
MLASmart Define. "unverifiable thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/unverifiable/thesaurus/synonyms>