unstable /ʌnˈsteɪbl/ adjective
CHANGE › likely to change or end suddenly
dengesiz, istikrarsız, kararsız an unstable situation an unstable economy782
PERSON › If someone is unstable, their moods and behaviour change suddenly, especially because they are mentally ill.
dengesiz, ne yapacağı belli olmayan597
MOVE › not fixed or safe and likely to move
dengesiz, sabit olmayan That chair looks a bit unstable.1980