Definition of foolproof
: so simple, plain, or reliable as to leave no opportunity for error, misuse, or failure
- a foolproof plan
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Examples of foolproof in a Sentence
DNA fingerprinting gives police a virtually foolproof way to link a suspect to a crime scene.
Recent Examples of foolproof from the Web
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Of course, having a foolproof lineup also helps calm the nerves.
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Different blush formulas and shades may come and go, but no matter what, Nars Orgasm remains a foolproof favorite.
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Reverse lunges, on the other hand, are a little more foolproof.
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Yet Iran’s opponents have struggled to provide foolproof evidence to back up their claims, creating an opening for Iran to deny.
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The ruling did not prevent police from using polygraphs in their investigations, and many officers back then still believed lie detectors were foolproof machines that could determine whether someone was telling the truth.
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How to make $1 billion in Silicon Valley, foolproof.
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Unfortunately, there's never been a foolproof way to safeguard against ticks.
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The only problem with the otherwise foolproof and generous plan was that Oliver didn’t actually know anyone at the last Blockbuster in Anchorage, Alaska.
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
FOOLPROOF Defined for English Language Learners
Definition of foolproof for English Language Learners
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: done, made, or planned so well that nothing can go wrong
FOOLPROOF Defined for Kids
Definition of foolproof for Students
: done, made, or planned so well that nothing can go wrong
- a foolproof recipe
Learn More about foolproof
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See words that rhyme with foolproof Spanish Central: Translation of foolproof Nglish: Translation of foolproof for Spanish speakers
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