idiot-proof
US /ˈɪd.i.ət.pruːf/
UK /ˈɪd.i.ət.pruːf/

1.
à prova de idiotas, fácil de usar
designed to be so simple to use that even a very stupid person cannot use it wrongly or damage it
:
•
The new software has an idiot-proof interface.
O novo software tem uma interface à prova de idiotas.
•
We need to make sure the instructions are completely idiot-proof.
Precisamos ter certeza de que as instruções são completamente à prova de idiotas.