246 entries under doubtful topic. ×

5
fly-by-night(adjective, nervous, dubious, unpredictable)
5
halfhearted(adjective, cool, weak, hesitant)
5
halting(adjective, weak, shy, hesitant)
5
troubled(adjective, upset, anxious, nervous, ill)
4
changing(adjective, upset, weak, anxious)
4
conditional(adjective, limited, vague, dubious)
4
contingent(adjective, delicate, unstable, chance, limited)
4
cryptic(adjective, obscure, difficult, dark)
4
fuzzy(adjective, rough, vague, dubious)
4
of two minds(expression, adjective, idiom, open)
4
open to question(expression, adjective, dubious, questionable)
4
reluctant(adjective, hesitant, cautious, unsure)
4
rickety(adjective, weak, sensitive, feeble)
4
tenebrous(adjective, obscure, rough, difficult, dark)
4
unintelligible(adjective, obscure, rough, difficult, dark)
3
afraid(adjective, anxious, nervous, shy)
3
disreputable(adjective, unsettled, dubious, unpredictable)
3
doubtable(adjective, unsettled, dubious, suspicious)
3
half-hearted(adjective, cool, shy, cautious)
3
hypothetical(adjective, dubious, likely, risky)
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APASmart Define. (2016). uncertain thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/uncertain/thesaurus/synonyms
ChicagoSmart Define. 2016. "uncertain thesaurus" https://smartdefine.org/uncertain/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, uncertain thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/uncertain/thesaurus/synonyms>.
MLASmart Define. "uncertain thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/uncertain/thesaurus/synonyms>