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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

It isn’t foolproof, but it usually flags at least a few inaccuracies.

From The Wall Street Journal • Mar. 21, 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

“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

With obvious pleasure Rosy showed Francis her data, and for the first time he was able to see how foolproof was her assertion that the sugar- phosphate backbone was on the outside of the molecule.

From "Double Helix" by James D. Watson




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