94 entries under unstable topic. ×

7
fluctuating(adjective, irregular, unsettled, unpredictable)
7
indecisive(adjective, uncertain, nervous, doubtful)
7
mutable(adjective, unsettled, fickle, variable)
6
impulsive(adjective, irregular, unsettled, unpredictable)
6
irregular(adjective, unsettled, unpredictable, unreliable)
6
unsound(adjective, uncertain, feeble, unsettled)
5
fitful(adjective, unsettled, variable)
5
hesitant(adjective, uncertain, nervous, feeble)
5
skittish(adjective, nervous, unsettled, variable)
5
spineless(adjective, uncertain, nervous, hesitant)
5
unsettled(adjective, uncertain, irregular, vague)
4
changeful(adjective, irregular, unsettled, unpredictable)
4
insecure(adjective, uncertain, nervous, doubtful)
4
shifting(adjective, irregular, unsettled, unpredictable)
4
unfixed(adjective, unsettled, vague, unpredictable)
4
whimsical(adjective, excited, unsettled, unreliable)
4
wishy-washy(adjective, uncertain, nervous, hesitant)
2
ineffectual(adjective, uncertain, nervous, hesitant)
2
permutable(adjective, unsettled, fickle, variable)
2
protean(adjective, unsettled, variable)
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APASmart Define. (2016). undependable thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/undependable/thesaurus/synonyms
ChicagoSmart Define. 2016. "undependable thesaurus" https://smartdefine.org/undependable/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, undependable thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/undependable/thesaurus/synonyms>.
MLASmart Define. "undependable thesaurus" 4 March 2016. Web. 28 September 2026. <https://smartdefine.org/undependable/thesaurus/synonyms>