535 entries under adjective topic. ×

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fragile(weak, delicate, false, ill)
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impulsive(careless, lively, active, unreasonable)
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insubstantial(weak, delicate, false, short)
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irrational(foolish, anxious, unreasonable, doubtful)
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labile
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mental(insane, psychiatric)
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moody(careless, unreasonable, unpredictable, changeable)
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not financially secure(characteristic, quality, finance, banking)
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not financially strong(characteristic, quality, finance, banking)
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not sound financially(characteristic, quality, finance, banking)
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of doubtful commericial viability(characteristic, quality, finance, banking)
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of doubtful financial viability(characteristic, quality, finance, banking)
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suspect(doubtful, shaky, uneven, unbalanced)
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touchy(understanding, keen, fine, sensible)
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unequal(stable, irregular)
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unsteadfast(changing, mobile, shifting, movable)
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variant(change, unsettled, variable)
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whimsical(change, continue, careless, unreasonable)
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wild-cat(characteristic, quality, finance, banking)
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wild cat(characteristic, quality, finance, banking)
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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>