HackerVoca

inconstant : fickle adjective

1 someone who is fickle is always changing their mind about people or things that they like, so that you cannot depend on them: an unpredictable and fickle lover

2 something such as weather that is fickle often changes suddenly

?fickleness noun [uncountable]: the fickleness of fame
, variable, volatile adjective

1 a volatile situation is likely to change suddenly and without much warning: a volatile economic environment

2 someone who is volatile can suddenly become angry or violent

3 a volatile liquid or substance changes easily into a gas

volatility noun [uncountable] , unstable