foolproof
adjective
fool·proof
ˈfül-ˌprüf 
: so simple, plain, or reliable as to leave no opportunity for error, misuse, or failure
a foolproof plan
Examples of foolproof in a Sentence
DNA fingerprinting gives police a virtually foolproof way to link a suspect to a crime scene.
Recent Examples on the Web
Under a vest Vests and short-sleeve T-shirts make a nearly foolproof combo, regardless of your outer layer’s form.
—
Jake Henry Smith, Glamour, 26 Mar. 2024
For an even more foolproof option, the Oster Cordless Electric Wine Opener nearly does all the work for you.
—Maya Polton, Better Homes & Gardens, 8 Feb. 2024
See all Example Sentences for foolproof 
Jake Henry Smith, Glamour, 26 Mar. 2024
For an even more foolproof option, the Oster Cordless Electric Wine Opener nearly does all the work for you.
—Maya Polton, Better Homes & Gardens, 8 Feb. 2024
See all Example Sentences for foolproof
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'foolproof.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near foolproof
Cite this Entry
“Foolproof.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/foolproof. Accessed 31 May. 2024.
Copy CitationKids Definition
foolproof
adjective
fool·proof
ˈfül-ˈprüf
: done, made, or planned so well that nothing can go wrong
foolproof directions
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