Longman Dictionary of Contemporary English homepage

instability

noun
     
Related topics: Illness and Disability
in‧sta‧bil‧i‧ty plural instabilities [uncountable and countable]
1 when a situation is not certain because there is the possibility of sudden change [≠ stability]:
the instability of the market
political instability in the region
2MI mental problems that are likely to cause sudden changes of behaviour [↪ unstable]:
nervous instability

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