unpredictability

noun
1
the quality something has when it is impossible to know in advance that it will happen or what it will be like
غیرقابل پیش‌بینی بودن, پیش‌بینی‌ناپذیری, عدم پیش‌بینی پذیری
2
the quality somebody has when you cannot predict how they will behave in a particular situation
غیرقابل‌پیش‌بینی‌بودن, عدم پیش‌بینی‌پذیری
His logical good sense complemented her unpredictability.