changing one's mind or behavior frequently and unpredictably; fickle or erratic

subject to sudden and unpredictable changes in mood or temper

changeable; fickle

changing constantly and unpredictably; volatile

to appear and disappear unpredictably

disaster and happiness do not follow rules; future blessings and misfortunes are unpredictable

(Chinese folk religion) Heibai Wuchang: two deities, one dressed in black and the other in white, responsible for escorting the spirits of the dead to the underworld