100 entries under erratic topic. ×

5
touchy(adjective, understanding, keen, fine, sensible)
5
whimsical(adjective, change, continue, careless, unreasonable)
4
agitated(adjective, upset, rough, violent, anxious)
4
batty(disturbed, unhinged)
4
chancy(adjective, delicate, uncertain, doubtful, unsettled)
4
daft(disturbed, unhinged)
4
deviating(adjective, casual, variable, random)
3
nutty(foolish, unreasonable, disturbed, illogical)
3
psychotic(mad, insane, disturbed, unhinged)
3
unsystematic(adjective, casual, random)
2
dicey(adjective, delicate, uncertain, irregular, doubtful)
2
effervescent(careless, lively, unreasonable, unreliable, changeable)
2
excitable(unpredictable, unreliable, fickle)
2
fluky(changeable, random)
2
haphazard(adjective, irregular, disturbed, broken)
2
impetuous(unpredictable, unreliable, changeable, volatile)
2
irritable(adjective, understanding, keen, fine, sensible)
2
rambling(irregular, unpredictable, unreliable, random)
2
silly(foolish, unreasonable, unreliable, changeable)
2
touched(disturbed, unhinged)
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APASmart Define. (2016). unstable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/unstable/thesaurus/synonyms
ChicagoSmart Define. 2016. "unstable thesaurus" https://smartdefine.org/unstable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, unstable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unstable/thesaurus/synonyms>.
MLASmart Define. "unstable thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/unstable/thesaurus/synonyms>