foolproof

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 spokeswoman added that the company’s age prediction algorithms show performance similar to the rest of the industry, but will never be completely foolproof.

From The Wall Street Journal • Mar. 16, 2026

For the people on your list who warrant a little extra effort — and perhaps a slightly expanded budget — I offer a reliably foolproof formula: one handmade element, paired with one small store-bought companion.

From Salon • Dec. 23, 2025

Both the bunker and the 20-minute red cards are very solid concepts in theory, but in practice they are not foolproof.

From BBC • Nov. 25, 2025

I did not, so I arranged to road-test the Breville Oracle Jet—a foolproof Cadillac for cappuccino lovers, I was told.

From The Wall Street Journal • Nov. 7, 2025

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

From "The Big Short" by Michael Lewis