65 entries under undecided topic. ×

12
indecisive(adjective, clear, open, delicate, certain)
12
distrustful(adjective, uncertain, nervous, doubtful, unsettled)
12
dubitable(adjective, clear, certain, uncertain, anxious)
12
moot(noun, adjective, open, uncertain, doubtful)
12
skeptical(adjective, certain, doubt, uncertain, nervous)
12
unclear(adjective, clear, open, rough, certain)
11
hesitant(adjective, open, uncertain, nervous, doubtful)
10
in question(expression, adjective, idiom, clear, obscure)
10
arguable(noun, adjective, uncertain, doubtful, unsettled)
10
fly-by-night(adjective, uncertain, nervous, dishonest, doubtful)
9
indeterminate(adjective, clear, obscure, rough, certain)
9
insecure(adjective, delicate, uncertain, nervous, unstable)
9
open(adjective, uncertain, nervous, unstable, doubtful)
8
controversial(noun, adjective, uncertain, hot, doubtful)
7
doubting(adjective, uncertain, dishonest, unsettled, hesitant)
7
trustless(adjective, uncertain, dishonest, doubtful, deceitful)
7
wavering(adjective, open, uncertain, nervous, dishonest)
6
chancy(adjective, clear, delicate, certain, uncertain)
6
unpredictable(adjective, weak, loose, uncertain, irregular)
5
faithless(adjective, uncertain, dishonest, unsettled, hesitant)
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APASmart Define. (2016). dubious thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/dubious/thesaurus/synonyms
ChicagoSmart Define. 2016. "dubious thesaurus" https://smartdefine.org/dubious/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, dubious thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/dubious/thesaurus/synonyms>.
MLASmart Define. "dubious thesaurus" 4 March 2016. Web. 25 September 2026. <https://smartdefine.org/dubious/thesaurus/synonyms>