1. An unexpected and abrupt cessation of function or operation in a system, device, or process
The sudden failure of the engine caused the car to stop on the highway.
A falha súbita do motor fez o carro parar na rodovia.
2. An unforeseen breakdown or collapse in performance, especially in technical or mechanical contexts
The power plant experienced a sudden failure that left thousands without electricity.
A usina elétrica sofreu uma falha súbita que deixou milhares sem eletricidade.