117 entries under vague topic. ×

2
inexplicit(adjective, uncertain, unclear, ambiguous)
2
muddy(uncertain, unclear, indistinct, indistinguishable)
2
pending(adjective, open, uncertain, unsettled)
2
shadowy(adjective, weak, obscure, rough, dark)
2
suppositional(uncertain, imaginary, theoretical, supposed)
2
unconfirmed(adjective, uncertain, shaky, dubious)
2
undefined(adjective, weak, dark, uncertain, dim)
2
unfixed(adjective, uncertain, hesitant, unknown)
2
unspecific(adjective, unknown, general, unclear)
2
unspecified(adjective, rough, unknown, unclear)
1
changeable(uncertain, uneven, indefinite, wavering)
1
changing(adjective, weak, uncertain, unsettled)
1
clear as dishwater(expression, idiom, uncertain, unclear)
1
enigmatical(uncertain, unclear)
1
fuzzy(unclear, ambiguous, hazy, misleading)
1
general(adjective, rough, unknown, unclear)
1
hanging by a thread(expression, adjective, idiom, delicate, uncertain)
1
ill-defined(adjective, weak, obscure, rough, dark)
1
imaginary(theoretical, supposed, assumed, mythical)
1
inconstant(shaky, changeable, uneven, unbalanced)
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APASmart Define. (2016). doubtful thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/doubtful/thesaurus/synonyms
ChicagoSmart Define. 2016. "doubtful thesaurus" https://smartdefine.org/doubtful/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, doubtful thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/doubtful/thesaurus/synonyms>.
MLASmart Define. "doubtful thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/doubtful/thesaurus/synonyms>