63 entries under doubtful topic. ×

6
irresolute(adjective, uncertain, unstable, shy, irregular)
6
vacillating(adjective, uncertain, unstable, shy, irregular)
5
insecure(adjective, vague, uneven, untrustworthy)
5
questionable(adjective, uncertain, vague, hesitant)
5
unfixed(adjective, vague, changeable, questionable)
5
untrustworthy(adjective, weak, careless, loose, foolish)
4
hesitant(adjective, uncertain, shy, vague)
4
indefinite(adjective, loose, vague, hesitant)
3
conjectural(adjective, vague, hesitant, changeable)
3
irrational(adjective, weak, silly, uncertain, crazy)
3
slippery(adjective, weak, uncertain, sensitive)
3
speculative(vague, unsure, intention, risky)
3
undecided(adjective, uncertain, vague, hesitant)
3
unresolved(adjective, vague, hesitant, changeable)
3
vague(adjective, unstable, hesitant, changeable)
2
ambiguous(vague, uneven, unsure, unbalanced)
2
doubting(adjective, uncertain, shy, hesitant)
2
shifty(adjective, weak, uncertain, sensitive)
2
skeptical(adjective, uncertain, shy, hesitant)
2
unclear(adjective, vague, hesitant, changeable)
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APASmart Define. (2015). unpredictable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/unpredictable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unpredictable thesaurus" https://smartdefine.org/unpredictable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, unpredictable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unpredictable/thesaurus/synonyms>.
MLASmart Define. "unpredictable thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/unpredictable/thesaurus/synonyms>