definition of
unpredictability

[1] #1 unpredictability n. [capriciousness] the quality of being guided by sudden unpredictable impulses. wn

[2] #2 unpredictability n. [volatility] the trait of being unpredictably irresolute; "the volatility of the market drove many investors away". wn

[3] #3 unpredictability n. lacking predictability. wn