Definition of foolproof
: so simple, plain, or reliable as to leave no opportunity for error, misuse, or failure a foolproof plan
Explore Merriam-Webster
Examples of foolproof in a Sentence
DNA fingerprinting gives police a virtually foolproof way to link a suspect to a crime scene.
Recent Examples of foolproof from the Web
-
But, unbelievably natural highlights just got a little more achievable, thanks to a foolproof technique celebrity colorist Matt Rez just let people in on.
-
The thing is, there’s no foolproof way to tell which is which.
-
Even this suggested method is unlikely to be foolproof.
-
Quantum teleportation is seen as the basis for unimaginably high-speed communication and foolproof cryptography.
-
Another way to protect against a sparrow's assault is to put up paired boxes for tree swallows and bluebirds, but there is no foolproof way to keep sparrows away from the boxes, Graff said.
-
And there are growing concerns that the electronic barriers about 37 miles from Lake Michigan are not foolproof in terms of keeping fish out.
-
Unfortunately, there's no foolproof way to block smishing messages entirely, says Steve Wicker, a computer engineering professor at Cornell University.
-
Glitter manicures are the easiest foolproof way to accomplish subtle DIY nail art.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'foolproof.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of foolproof
1902
FOOLPROOF Defined for English Language Learners
foolproof
playDefinition of foolproof for English Language Learners
-
: done, made, or planned so well that nothing can go wrong
FOOLPROOF Defined for Kids
foolproof
playDefinition of foolproof for Students
: done, made, or planned so well that nothing can go wrong a foolproof recipe
Learn More about foolproof
-
See words that rhyme with foolproof Spanish Central: Translation of foolproof Nglish: Translation of foolproof for Spanish speakers
Seen and Heard
What made you want to look up foolproof? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!