108 entries under fickle topic. ×

8
untrustworthy(adjective, weak, false, careless, loose)
7
indecisive(adjective, weak, delicate, uncertain, nervous)
7
neurotic(adjective, anxious, unpredictable, unreliable, fearful)
7
tricky(adjective, understanding, keen, fine, difficult)
6
movable(adjective, weak, lively, active, doubtful)
6
spasmodic(adjective, anxious, irregular, unsettled, agitated)
5
impulsive(adjective, careless, lively, active, unreasonable)
5
touchy(adjective, understanding, keen, fine, sensible)
4
agitated(adjective, upset, rough, violent, anxious)
4
ephemeral(adjective, short, limited, impulsive, unpredictable)
4
flexible(adjective, changeable, variable, volatile)
4
fly-by-night(adjective, careless, loose, foolish, uncertain)
4
lubricious(adjective, smooth, careless, lively, uncertain)
4
questionable(adjective, open, obscure, uncertain, unsettled)
4
shifty(adjective, weak, uncertain, sensitive, doubtful)
2
excitable(unpredictable, unreliable, erratic)
2
irritable(adjective, understanding, keen, fine, sensible)
2
makeshift(adjective, short, limited, unpredictable)
2
unequable(adjective, changeable, volatile, changing)
2
unfaithful(adjective, false, dishonest, dubious, unpredictable)
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APASmart Define. (2016). unstable thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unstable/thesaurus/synonyms
ChicagoSmart Define. 2016. "unstable thesaurus" https://smartdefine.org/unstable/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, unstable thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unstable/thesaurus/synonyms>.
MLASmart Define. "unstable thesaurus" 26 February 2016. Web. 27 September 2026. <https://smartdefine.org/unstable/thesaurus/synonyms>