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Definitions

foolproof

[fool-proof] / ˈfulˌpruf /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The efforts underscore the challenge: There is no foolproof way to defend submarine cables.

From The Wall Street Journal • Apr. 9, 2026

The trick to turning one deli run into multiple dinners is simple and nearly foolproof: one creamy, one crunchy, one briny or fresh.

From Salon • Feb. 12, 2026

A government-funded, industry-run trial looked at the main methods of age assurance and earlier this year reported all were technically possible – but none were foolproof and all carried risks.

From BBC • Dec. 6, 2025

“Those can be defeated but that can take a lot of time,” Sutter said.”It’s not foolproof but at least it’s a strong deterrent.”

From Los Angeles Times • Nov. 26, 2025

It was hardly foolproof; indeed, it was almost certain to fail more often than it succeeded.

From "The Big Short" by Michael Lewis




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