11
volatile(adjective, change, continue, difficult, delicate)
10
chance(adjective, wonderful, uncertain, changeable, erratic)
10
dicey(noun, adjective, delicate, unusual, uncertain)
9
flighty(adjective, careless, unstable, unreasonable, unsettled)
9
fluctuating(adjective, lively, active, unstable, irregular)
9
iffy(noun, adjective, uncertain, irregular, doubtful)
9
random(adjective, uncertain, unreliable, changeable, erratic)
9
temperamental(adjective, change, continue, delicate, careless)
9
wayward(adjective, careless, unstable, unreasonable, contrary)
8
freakish(adjective, change, continue, unusual, careless)
8
impulsive(noun, adjective, extraordinary, unusual, careless)
8
risky(noun, adjective, weak, delicate, uncertain)
8
unexpected(adjective, passionate, violent, uncertain, thoughtless)
8
unsafe(adjective, delicate, loose, sensitive, unstable)
8
wavering(adjective, upset, uncertain, anxious, unstable)
7
delicate(adjective, difficult, sensitive, tricky, prickly)
7
hazardous(adjective, delicate, wild, uncertain, sensitive)
7
incalculable(adjective, uncertain, doubtful, dubious, changeable)
7
precarious(adjective, delicate, sensitive, doubtful, vague)
6
accidental(adjective, extraordinary, wonderful, shocking, erratic)
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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>