1. 不稳定(性);不稳固(性)
Instability is the quality of being unstable.
e.g. ...unpopular policies, which resulted in social discontent and political instability.
导致社会不满与政治不稳定的不得人心的政策
e.g. ...Caligula's inherent mental instability...
卡里古拉先天性的精神不稳定
名词不稳定；不稳固；（精神的）不稳定状态网络不稳定性；不坚决；不安定