1. An alteration or transformation that was not anticipated or foreseen
The unpredicted change in weather caused the event to be postponed.
A mudança imprevista no tempo causou o adiamento do evento.
2. An unexpected shift in circumstances, conditions, or situations
The company had to adapt to the unpredicted change in market demand.
A empresa teve que se adaptar à mudança imprevista na demanda de mercado.