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Meaning of “unstable” - Learner’s Dictionary

unstable

adjective     /ʌnˈsteɪbl/
CHANGE
likely to change or end suddenly: an unstable situation an unstable economyChangingAdapting and modifying Adapting and attuning to somethingChanging frequently
PERSON
If someone is unstable, their moods and behaviour change suddenly, especially because they are mentally ill.Mental and psychiatric disorders
MOVE
not fixed or safe and likely to move: That chair looks a bit unstable.Fragile and breakable
(Definition of unstable from the Cambridge Learner’s Dictionary © Cambridge University Press)
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