59 entries under questionable topic. ×

34
obscure(adjective, dull, clear, hard, weak)
32
indistinct(adjective, dull, close, quiet, clear)
26
indefinite(adjective, clear, open, obscure, rough)
18
ambiguous(adjective, clear, open, obscure, rough)
17
uncertain(adjective, clear, open, obscure, rough)
16
indeterminate(adjective, clear, rough, certain, uncertain)
13
equivocal(adjective, clear, open, obscure, rough)
13
dubious(adjective, clear, open, rough, certain)
11
doubtful(adjective, clear, open, obscure, rough)
10
clouded(adjective, clear, obscure, certain, uncertain)
10
unsure(adjective, clear, open, rough, certain)
8
indecisive(adjective, clear, open, certain, uncertain)
8
unsettled(adjective, clear, open, rough, uncertain)
6
borderline(adjective, clear, open, certain, uncertain)
6
problematic(adjective, clear, rough, certain, uncertain)
6
undecided(adjective, open, uncertain, definite, doubtful)
5
suspect(adjective, uncertain, doubtful, unsettled, shaky)
4
open(adjective, uncertain, nervous, doubtful, unsettled)
4
shaky(adjective, uncertain, nervous, doubtful, dubious)
3
iffy(adjective, clear, open, informal, certain)
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APASmart Define. (2015). unclear thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/unclear/thesaurus/synonyms
ChicagoSmart Define. 2015. "unclear thesaurus" https://smartdefine.org/unclear/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, unclear thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/unclear/thesaurus/synonyms>.
MLASmart Define. "unclear thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/unclear/thesaurus/synonyms>