vagary |
erratical |
As a noun vagary
is an erratic, unpredictable occurrence or action.
As an adjective erratical is
(rare) erratic.
volatile |
erratical |
As adjectives the difference between volatile and erratical
is that
volatile is (physics) evaporating or vaporizing readily under normal conditions while
erratical is (rare) erratic.
capricious |
erratical |
As adjectives the difference between capricious and erratical
is that
capricious is impulsive and unpredictable; determined by chance, impulse, or whim while
erratical is erratic.