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
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
Prepping bean salad for the week is a foolproof way to keep nutritious meals on hand.
—Olivia McIntosh, Martha Stewart, 19 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
Clara McMahon, PEOPLE, 25 May 2026
In a similar vein, the sunscreen is foolproof as far as application.
—Sophie Wirt, InStyle, 22 May 2026
Prepping bean salad for the week is a foolproof way to keep nutritious meals on hand.
—Olivia McIntosh, Martha Stewart, 19 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
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Surrendering to a relaxing massage with a pungent herbal oil—one treatment among many of Sisley’s top-notch line of Phyto-aromatic beauty products—was in perfect sync with the luxe countryside spirit.—
Condé Nast,
Condé Nast Traveler,
4 June 2026
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The game, which was developed in mid-19th century China, requires mental focus and strategic thinking, providing a perfect workout for the brain.—
Lauren Pastrana,
CBS News,
4 June 2026
Adjective
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Every detail is absolutely flawless, from the friendly doormen to the impeccable lobby.—
Condé Nast,
Condé Nast Traveler,
2 June 2026
-
Technology is visually impressive, although not entirely flawless in execution.—
Matthew MacConnell,
Forbes.com,
1 June 2026
Adjective
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Final word Ultra professional and utterly reliable, Chiva-Som deserves every accolade.—
Condé Nast,
Condé Nast Traveler,
2 June 2026
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The malware devotes considerable attention to CI/CD (continuous integration/continuous delivery) systems, which allow for faster and more reliable software releases by automating the building, testing, and deploying of code changes.—
Dan Goodin,
ArsTechnica,
1 June 2026
Cite this Entry
“Foolproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/foolproof. Accessed 5 Jun. 2026.
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