| emergency(uncertainty, risk, hazard, exposure, peril) | |
| endangerment(uncertainty, risk, hazard, exposure, peril) | |
| enervation(noun, weakness, fault, lack, lapse) | |
| ephemerality | |
| ephemeralness | |
| erraticism | |
| excitableness | |
| exigency(uncertainty, risk, hazard, exposure, peril) | |
| failing(noun, weakness, fault, lack, lapse) | |
| faintness(noun, weakness, fault, lack, lapse) | |
| faithlessness | |
| fault(noun, weakness, lack, lapse, failing) | |
| feebleness(noun, weakness, fault, lack, lapse) | |
| fence-sitting | |
| fence-straddling | |
| ferment(noun, activity, movement, disorder, anxiety) | |
| finitude | |
| fleetingness | |
| flippancy(noun, frivolity, lightness, unpredictability, flightiness) | |
| fondness(noun, weakness, fault, lack, lapse) |
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| APA | Smart Define. (2015). instability thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/instability/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "instability thesaurus" https://smartdefine.org/instability/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, instability thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/instability/thesaurus/synonyms>. |
| MLA | Smart Define. "instability thesaurus" 23 December 2015. Web. 21 September 2026. <https://smartdefine.org/instability/thesaurus/synonyms> |