110 entries under doubtful topic. ×

5
unsteady(adjective, weak, uncertain, hesitant)
4
unstable(adjective, weak, uncertain, nervous)
4
ambiguous(adjective, open, uncertain, unsettled)
4
fluctuating(adjective, weak, uncertain, hesitant)
4
insecure(adjective, open, uncertain, nervous)
4
perplexed(uncertain, hesitant, dubious, unsure)
4
unconvinced(adjective, uncertain, nervous, hesitant)
4
undependable(adjective, uncertain, nervous, insecure)
4
unfixed(adjective, uncertain, vague, hesitant)
3
betwixt and between(expression, adjective, idiom, open, uncertain)
3
faltering(adjective, weak, uncertain, unsettled)
3
unpredictable(adjective, uncertain, vague, hesitant)
3
unreliable(adjective, uncertain, nervous, vague)
3
up in the air(expression, adjective, idiom, open, certain)
3
weak(adjective, uncertain, nervous, dubious)
2
distrustful(adjective, uncertain, nervous, unsettled)
2
fly-by-night(adjective, uncertain, nervous, insecure)
2
halfhearted(adjective, cool, weak, uncertain)
2
in doubt(expression, adjective, idiom, open, certain)
2
sceptical
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APASmart Define. (2015). undecided thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/undecided/thesaurus/synonyms
ChicagoSmart Define. 2015. "undecided thesaurus" https://smartdefine.org/undecided/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, undecided thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/undecided/thesaurus/synonyms>.
MLASmart Define. "undecided thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/undecided/thesaurus/synonyms>