61 entries under doubtful topic. ×

5
unproven(adjective, uncertain, dubious, unsubstantiated)
4
unsettled(adjective, uncertain, vague, dubious)
3
hypothetical(adjective, uncertain, dubious, imaginary)
3
uncertain(adjective, vague, dubious, changeable)
3
undetermined(adjective, vague, hesitant, changeable)
2
ambiguous(adjective, uncertain, shaky, vague)
2
changeable(adjective, vague, hesitant, unsure)
2
debatable(adjective, uncertain, shaky, vague)
2
dubious(adjective, uncertain, vague, unsure)
2
indecisive(uncertain, vague, dubious, unsure)
2
indefinite(uncertain, unsettled, vague, dubious)
2
provisional(adjective, uncertain, unsettled, vague)
2
questionable(adjective, uncertain, shaky, vague)
2
risky(adjective, vague, unsure)
2
speculative(adjective, unsettled, shaky, vague)
2
undecided(adjective, unsettled, vague, hesitant)
2
unfixed(vague, hesitant, changeable, unsure)
2
unsure(adjective, vague)
1
ambivalent(vague, hesitant, changeable, unsure)
1
chancy(shaky, vague, unsure, unlikely)
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APASmart Define. (2015). unconfirmed thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unconfirmed/thesaurus/synonyms
ChicagoSmart Define. 2015. "unconfirmed thesaurus" https://smartdefine.org/unconfirmed/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, unconfirmed thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unconfirmed/thesaurus/synonyms>.
MLASmart Define. "unconfirmed thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/unconfirmed/thesaurus/synonyms>