1. To diminish or weaken the ability of something to work properly or perform its intended function
The software bug will impair functionality across the entire system.
O erro no software prejudicará a funcionalidade em todo o sistema.
2. To reduce the effectiveness or performance capability of a device, program, or service
Outdated drivers can impair functionality of your graphics card.
Drivers desatualizados podem prejudicar a funcionalidade de sua placa gráfica.