124 entries under doubtful topic. ×

9
unintelligible(adjective, hard, obscure, rough, difficult)
8
indecisive(adjective, clear, open, certain, uncertain)
8
undefined(adjective, weak, obscure, rough, dark)
8
unsettled(adjective, clear, open, rough, uncertain)
7
undetermined(adjective, open, rough, determined, uncertain)
7
weak(adjective, dull, soft, gentle, dark)
6
questionable(adjective, clear, rough, certain, uncertain)
6
borderline(adjective, clear, open, certain, uncertain)
6
problematic(adjective, clear, rough, certain, uncertain)
6
tenebrous(adjective, obscure, rough, difficult, dark)
6
undecided(adjective, open, uncertain, definite)
5
suspect(adjective, uncertain, unsettled, shaky)
4
chancy(adjective, clear, certain, uncertain, anxious)
4
evasive(adjective, obscure, uncertain, vague)
4
faltering(adjective, weak, uncertain, unsettled)
4
inconclusive(adjective, clear, obscure, certain, uncertain)
4
open(adjective, uncertain, nervous, unsettled)
4
shaky(adjective, uncertain, nervous, dubious)
3
arcane(adjective, obscure, difficult, uncertain)
3
dubitable(adjective, clear, obscure, certain, uncertain)
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APASmart Define. (2015). unclear thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unclear/thesaurus/synonyms
ChicagoSmart Define. 2015. "unclear thesaurus" https://smartdefine.org/unclear/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, unclear thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unclear/thesaurus/synonyms>.
MLASmart Define. "unclear thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/unclear/thesaurus/synonyms>