2
coquettish(changeable, indecisive, inconsistent)
2
critical(adjective, difficult, tricky)
2
debatable
2
desultory(irregular, unreliable, erratic, frivolous, haphazard)
2
difficult(noun, adjective, tricky, risky, dangerous)
2
dizzy(uneven, unbalanced, unhinged)
2
dodgy
2
doubting(adjective, uncertain, shy, doubtful, hesitant)
2
emotional(noun, passionate, violent, unstable, thoughtless)
2
extemporaneous(noun, thoughtless, impetuous, unwary)
2
faithless(adjective, changeable, indecisive, inconsistent)
2
fallible(adjective, fickle, variable, undependable, fly-by-night)
2
flickering(adjective, irregular, changeable, variable)
2
fluctuant(irregular, dubious, unreliable, risky, hazardous)
2
fluid(adjective, upset, uncertain, anxious, unstable)
2
hot(risky, dangerous, unsafe)
2
instinctive(noun, passionate, violent, thoughtless, abrupt)
2
intermittent(adjective, irregular, unreliable, changeable, uneven)
2
involuntary(noun, passionate, violent, thoughtless, abrupt)
2
lubricious(adjective, careless, lively, uncertain, active)
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APASmart Define. (2015). unpredictable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/unpredictable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unpredictable thesaurus" https://smartdefine.org/unpredictable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, unpredictable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/unpredictable/thesaurus/synonyms>.
MLASmart Define. "unpredictable thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/unpredictable/thesaurus/synonyms>