foolproof

foolproof
[ˈfuːlpruːf]
adjetivo
1infalible (method, plan)

foolproof [ful-pruf]
adjetivo
1Muy sencillo, fácil, a prueba de inexpertos.
2Fuerte, resistente.

foolproof [ˈfuːlpruːf]
adjective
[+mechanism, scheme etc] infalible