Something such as a plan or a machine that is foolproof is so well designed, easy to understand, or easy to use that it cannot go wrong or be used wrongly. The system is not 100 per cent foolproof I spent the day working out a foolproof plan to save him. a foolproof method, plan, system etc is certain to be successful = infallible
not liable to failure; "a foolproof identification system"; "the unfailing sign of an amateur"; "an unfailing test
fool proof
التركية النطق
ful pruf
النطق
/ˈfo͞ol ˈpro͞of/ /ˈfuːl ˈpruːf/
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[ 'fül ] (noun.) 13th century. Middle English, from Old French fol, from Late Latin follis, from Latin, bellows, bag; akin to Old High German bolla blister, balg bag; more at BELLY.