as in perfect
done, made, or planned so well that nothing can go wrong
a foolproof plan DNA fingerprinting gives police a virtually foolproof way to link a suspect to a crime scene.
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Recent Examples of foolproof
This is her foolproof method for getting a bathroom spotless in just 30 minutes.
—
Aliyah Rodriguez, The Spruce, 27 May 2026
Sundresses are also a foolproof staple for summer.
—Clara McMahon, PEOPLE, 25 May 2026
In a similar vein, the sunscreen is foolproof as far as application.
—Sophie Wirt, InStyle, 22 May 2026
Worcestershire, dry mustard, and ground red pepper combine with your go-to cheese, for a foolproof party snack.
—Nellah Bailey McGough, Southern Living, 19 May 2026
See All Example Sentences for foolproof
Aliyah Rodriguez, The Spruce, 27 May 2026
Sundresses are also a foolproof staple for summer.
—Clara McMahon, PEOPLE, 25 May 2026
In a similar vein, the sunscreen is foolproof as far as application.
—Sophie Wirt, InStyle, 22 May 2026
Worcestershire, dry mustard, and ground red pepper combine with your go-to cheese, for a foolproof party snack.
—Nellah Bailey McGough, Southern Living, 19 May 2026
See All Example Sentences for foolproof
Recent Examples of Synonyms for foolproof
Adjective
-
Young boys, some no older than five or six, showed off their marksmanship by throwing reeds like spears with perfect accuracy, and the men demonstrated their precision with bow and arrow.—
Literary Hub,
Literary Hub,
11 June 2026
-
The other booking options, which are perfect for families, include two-bedroom suites, three-bedroom villas, and four-bedroom villas, with ocean and beachfront views available.—
Condé Nast,
Condé Nast Traveler,
11 June 2026
Adjective
-
Last November in Tirana, during a trip where England completed a flawless qualification campaign with a 2-0 win against Albania, Tuchel was asked to reflect on his time with England.—
Jack Pitt-Brooke,
New York Times,
10 June 2026
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For inspiration on flawless exterior transformations, precision continuous concrete curbing, and high-end borders, a quick scroll through the Border Magic Facebook page demonstrates exactly how custom hardscaping signals to buyers that no expense was spared in the upkeep of the estate.—
Kansas City Star,
Kansas City Star,
8 June 2026
Adjective
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These advancements are made possible with Spectrum’s fiber broadband network and industry-leading reliability and speed, which delivers the fastest and most reliable Internet*, keeping game day viewing seamless and exciting.—
Dennis Johnson,
Oc Register,
8 June 2026
-
For the most part, all reliable and good, though occasionally, particularly during trips off-hours when ridership would fall off, the experience could be dicey with the train car almost empty and a rider shouting, swearing, smoking or even being threatening.—
Chicago Tribune,
Chicago Tribune,
8 June 2026
Cite this Entry
“Foolproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/foolproof. Accessed 11 Jun. 2026.
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