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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 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

Leaders said grabbing sovereign assets would set a dangerous precedent and that a complex plan prepared by the European Union wasn’t foolproof.

From The Wall Street Journal • Dec. 19, 2025

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

A few days later, Capron returned to Leah’s after devising what he considered a foolproof spirit test.

From "American Spirits" by Barb Rosenstock