75 entries under erratic topic. ×

9
iffy(noun, adjective, uncertain, irregular, doubtful)
9
random(adjective, uncertain, unreliable, changeable)
9
temperamental(adjective, change, continue, delicate, careless)
9
wayward(adjective, careless, unstable, unreasonable, contrary)
8
impulsive(noun, adjective, extraordinary, unusual, careless)
8
wavering(adjective, upset, uncertain, anxious, unstable)
6
accidental(adjective, extraordinary, wonderful, shocking)
6
changeful(adjective, upset, careless, anxious, unstable)
6
fitful(adjective, careless, strange, unstable, unreasonable)
6
fortuitous(adjective, extraordinary, wonderful, shocking)
6
indecisive(adjective, uncertain, unstable, shy, doubtful)
6
irresolute(adjective, uncertain, unstable, shy, irregular)
6
mutable(adjective, upset, careless, uncertain, anxious)
6
ticklish(noun, adjective, upset, change, continue)
6
vacillating(adjective, uncertain, unstable, shy, irregular)
5
fluky(adjective, uncertain, changeable, risky)
5
irresponsible(adjective, careless, foolish, unstable, unsettled)
5
shifting(adjective, upset, strange, anxious, unstable)
4
explosive(adjective, upset, passionate, wild, uncertain)
4
varying(adjective, unstable, irregular, unsettled, unreliable)
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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>