1. to work or function in an improper, faulty, or unintended manner
The machine began to operate incorrectly after the power surge.
A máquina começou a funcionar incorretamente após o pico de energia.
2. to perform a task or procedure in a wrong or ineffective way
The software started to operate incorrectly when we updated the system.
O software começou a funcionar incorretamente quando atualizamos o sistema.