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
But maybe throwing your script into a pit of other scripts in the hopes of earning someone’s attention was never a foolproof strategy.
—
Harrison Richlin, IndieWire, 6 May 2025
But fear not—Vogue has a foolproof guide for nailing a beach wedding.
—Christian Allaire, Vogue, 28 Apr. 2025
One of the most foolproof ways to know when severe weather is en route or likely to form is simply to have your smartphone.
—Cody Godwin, USA Today, 23 Apr. 2025
Wear them together for a foolproof spring outfit, or separately with dressier or more casual pieces in your suitcase, depending on the occasion.
—Amelia McBride, Travel + Leisure, 21 Mar. 2025
See All Example Sentences for foolproof
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Harrison Richlin, IndieWire, 6 May 2025
But fear not—Vogue has a foolproof guide for nailing a beach wedding.
—Christian Allaire, Vogue, 28 Apr. 2025
One of the most foolproof ways to know when severe weather is en route or likely to form is simply to have your smartphone.
—Cody Godwin, USA Today, 23 Apr. 2025
Wear them together for a foolproof spring outfit, or separately with dressier or more casual pieces in your suitcase, depending on the occasion.
—Amelia McBride, Travel + Leisure, 21 Mar. 2025
See All Example Sentences for foolproof
Cite this Entry
“Foolproof.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/foolproof. Accessed 2 Jun. 2025.
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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