Noun unpredictability has 3 senses

• unpredictability(n = noun.attribute) capriciousness - the quality of being guided by sudden unpredictable impulses; Array
is a kind of changefulness, inconstancy

• unpredictability(n = noun.attribute) volatility - the trait of being unpredictably irresolute; "the volatility of the market drove many investors away"
is a kind of irresoluteness, irresolution

• unpredictability(n = noun.attribute) Array - lacking predictability; Array
is a kind of precariousness, uncertainness, uncertainty
Antonym: predictability
Derived forms adjective unpredictable₂, adjective unpredictable₁