unstable; insecure; precarious
Describes physical, emotional, economic, or systemic lack of stability. The gloss 'crankiness' is a rare, informal extension for a person's mood.
This desk is unstable because its legs are a bit wobbly.
He has been emotionally unstable lately.
Investment risk is high in countries with political instability.
Recently, the economy has become unstable.
Unstable weather has been continuing.
He has been emotionally unstable lately.
That chair has short legs and wobbles precariously.
emotional instability
political instability