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foolproof meaning in Spanish

EnglishSpanish
foolproof ((device) fail-safe)
adjective
[UK: ˈfuːl.pruːf]
[US: ˈfuːl.ˌpruːf]

seguroadjective

foolproof ((plan) infallible)
adjective
[UK: ˈfuːl.pruːf]
[US: ˈfuːl.ˌpruːf]

infalibleadjective