- 1the quality of a situation in which things are likely to change or fail suddenly political and economic instability
- 2a mental condition in which someone's behavior is likely to change suddenly mental/emotional instability opposite stability see unstable
noun jump to other results
NAmE//ˌɪnstəˈbɪlət̮i//
[uncountable, countable, usually plural] (pl. instabilities)Check pronunciation: instability