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
Ahead, several foolproof Valentine’s Day outfits to shop and copy now.
—
Talia Abbas, Glamour, 15 Jan. 2025
Wear yours with trousers, jeans, and maxi skirts for a foolproof winter outfit every time.
—taylor Jean Stephan, People.com, 17 Dec. 2024
Ultimately, a foolproof test for fake wine remains a far-off idea.
—Chris Hall, WIRED, 18 Dec. 2024
Homemade foolproof fudge can be stored in the freezer, wrapped and sealed tightly in freezer safe plastic wrap or a container, for up to three months.
—Melissa Gray, Southern Living, 12 Dec. 2024
See all Example Sentences for foolproof 
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Talia Abbas, Glamour, 15 Jan. 2025
Wear yours with trousers, jeans, and maxi skirts for a foolproof winter outfit every time.
—taylor Jean Stephan, People.com, 17 Dec. 2024
Ultimately, a foolproof test for fake wine remains a far-off idea.
—Chris Hall, WIRED, 18 Dec. 2024
Homemade foolproof fudge can be stored in the freezer, wrapped and sealed tightly in freezer safe plastic wrap or a container, for up to three months.
—Melissa Gray, Southern Living, 12 Dec. 2024
See all Example Sentences for foolproof
Dictionary Entries Near foolproof
Cite this Entry
“Foolproof.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/foolproof. Accessed 30 Jan. 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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