unstable
🇺🇸
/ʌnˈsteɪbl/
🇬🇧
/ʌnˈsteɪbl/
adjective
R
can change quickly and unpredictably
The weather is very unstable today.
R
someone whose mood or behavior changes often and unexpectedly
His moods are very unstable, changing from happy to sad very fast.
R
something that might move or fall easily
The table is quite unstable; be careful putting anything heavy on it.
R
not remaining constant in its chemical composition
This compound is unstable and can change when exposed to light.
translation
can change quickly and unpredictably; someone whose mood or behavior changes often and unexpectedly; something that might move or fall easily; not remaining constant in its chemical composition