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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.

Kelly is no foolproof indicator of where the right is headed; she bet against Trump, after all.

From Slate • May 6, 2026

The Jets also offer a reminder that this isn’t a foolproof blueprint.

From The Wall Street Journal • Mar. 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

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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