30 entries under questionable topic. ×

4
unsubstantiated(adjective, unproven)
3
doubtful(adjective, uncertain, shaky, vague, dubious)
3
undetermined(adjective, doubtful, vague, hesitant, changeable)
2
changeable(adjective, doubtful, vague, hesitant, unsure)
2
indefinite(uncertain, doubtful, unsettled, vague, dubious)
2
undecided(adjective, doubtful, unsettled, vague, hesitant)
2
unfixed(doubtful, vague, hesitant, changeable, unsure)
1
ambivalent(doubtful, vague, hesitant, changeable, unsure)
1
conjectural(doubtful, unsettled, vague, assumed)
1
fitful(doubtful, vague, hesitant, changeable, unsure)
1
hazy(doubtful, shaky, vague, hesitant, changeable)
1
incalculable(doubtful, vague, hesitant, changeable, unsure)
1
inconstant(doubtful, vague, hesitant, changeable, unsure)
1
indeterminate(uncertain, doubtful, vague, dubious)
1
indistinct(doubtful, shaky, vague, hesitant, changeable)
1
irregular(doubtful, vague, hesitant, changeable, unsure)
1
irresolute(doubtful, vague, hesitant, changeable, unsure)
1
unclear(doubtful, shaky, vague, hesitant, changeable)
1
unforeseeable(doubtful, vague, hesitant, changeable, unsure)
1
unresolved(doubtful, vague, hesitant, changeable, unsure)
<12>
11 years ago|9.5k views|share |citing 
APASmart Define. (2015). unconfirmed thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unconfirmed/thesaurus/synonyms
ChicagoSmart Define. 2015. "unconfirmed thesaurus" https://smartdefine.org/unconfirmed/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, unconfirmed thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unconfirmed/thesaurus/synonyms>.
MLASmart Define. "unconfirmed thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/unconfirmed/thesaurus/synonyms>