From Longman Dictionary of Contemporary Englishinstabilityin‧sta‧bil‧i‧ty /ˌɪnstəˈbɪləti/ AWL noun (plural instabilities) [countable, uncountable] 1 UNCERTAINwhen a situation is not certain because there is the possibility of sudden change OPP stability the instability of the market political instability in the region2 MIMENTALLY ILLmental problems that are likely to cause sudden changes of behaviour → unstable nervous instability
Examples from the Corpus
instability• Her mental instability led her to commit these crimes.• There are fears that political instability in the region will lead to civil war. 