16
flighty(adjective, careless, unreasonable, unsettled, changeable)
16
insecure(adjective, upset, change, strong, weak)
16
vacillating(adjective, weak, delicate, uncertain, nervous)
16
weak(adjective, change, strong, delicate, uncertain)
15
infirm(adjective, change, strong, weak, delicate)
15
rickety(adjective, weak, doubtful, unsettled, shaky)
15
risky(adjective, dangerous, characteristic, quality, finance)
14
irresolute(adjective, weak, delicate, uncertain, anxious)
14
mobile(adjective, upset, lively, active, anxious)
14
undependable(adjective, delicate, passionate, careless, foolish)
14
unsafe(adjective, dangerous, characteristic, quality, finance)
14
unsure(adjective, change, strong, weak, delicate)
13
inconsistent(adjective, change, continue, passionate, loose)
12
ever-changing(adjective, changeable)
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)
12
temporary(adjective, present, short, limited, brief)
11
fluctuating(adjective, weak, lively, uncertain, active)
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APASmart Define. (2016). unstable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unstable/thesaurus/synonyms
ChicagoSmart Define. 2016. "unstable thesaurus" https://smartdefine.org/unstable/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, unstable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unstable/thesaurus/synonyms>.
MLASmart Define. "unstable thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/unstable/thesaurus/synonyms>