7
ramshackle(adjective, danger)
7
rootless(adjective, weak, uncertain, doubtful, unsettled)
7
tricky(adjective, understanding, keen, fine, difficult)
7
unsubstantial(adjective, weak, delicate, false, ill)
6
changing(adjective, upset, weak, uncertain, anxious)
6
decrepit(adjective, weak, delicate, false, ill)
6
evanescent
6
iffy(adjective, delicate, uncertain, nervous, irregular)
6
indefinite(adjective, loose, uncertain, doubtful, unsettled)
6
mentally ill(expression, adjective, idiom, mad, insane)
6
movable(adjective, weak, lively, active, doubtful)
6
spasmodic(adjective, anxious, irregular, unsettled, agitated)
6
temporal(adjective, transientness)
6
tottery(adjective, change, strong, weak, unsettled)
6
wayward(adjective, careless, unreasonable, irregular, unreliable)
5
commercially unsound(adjective, characteristic, quality, finance, banking)
5
convertible(adjective, unsettled, changeable, variable)
5
crumbling(adjective, danger)
5
demented(false, foolish, unreasonable, ill, shaky)
5
desultory(adjective, irregular, restless, unpredictable, disturbed)
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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>