100 entries under erratic topic. ×

12
fitful(adjective, careless, anxious, irregular, doubtful)
12
fluid(adjective, upset, change, anxious, unsettled)
12
irresponsible(adjective, characteristic, quality, careless, finance)
12
temperamental(adjective, change, continue, delicate, careless)
11
fluctuating(adjective, weak, lively, uncertain, active)
10
irregular(adjective, lively, uncertain, active, unsettled)
10
shifting(adjective, upset, anxious, limited, irregular)
10
ticklish(adjective, upset, change, understanding, continue)
9
changeful(adjective, upset, careless, anxious, unreasonable)
9
protean(adjective, unsettled, unpredictable, unreliable, changeable)
9
sensitive(adjective, weak, delicate, passionate, uncertain)
9
varying(adjective, irregular, unsettled, unpredictable, unreliable)
8
doubtful(adjective, weak, delicate, uncertain, nervous)
8
explosive(adjective, unreliable, fickle, insecure, volatile)
7
indecisive(adjective, weak, delicate, uncertain, nervous)
7
neurotic(adjective, anxious, unpredictable, unreliable, fearful)
6
iffy(adjective, delicate, uncertain, nervous, irregular)
6
movable(adjective, weak, lively, active, doubtful)
6
spasmodic(adjective, anxious, irregular, unsettled, agitated)
5
impulsive(adjective, careless, lively, active, unreasonable)
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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>