foolproof

adjective fool·proof \ ˈfül-ˌprüf \
|Updated on: 4 Aug 2018

Definition of foolproof

: so simple, plain, or reliable as to leave no opportunity for error, misuse, or failure
  • a foolproof plan

Examples of foolproof in a Sentence

  1. DNA fingerprinting gives police a virtually foolproof way to link a suspect to a crime scene.

Recent Examples of foolproof from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'foolproof.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of foolproof

1902

in the meaning defined above

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FOOLPROOF Defined for English Language Learners

foolproof

Definition of foolproof for English Language Learners

  • : done, made, or planned so well that nothing can go wrong


FOOLPROOF Defined for Kids

foolproof

adjective fool·proof \ ˈfül-ˈprüf \

Definition of foolproof for Students

: done, made, or planned so well that nothing can go wrong
  • a foolproof recipe


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