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
Maritime tracking isn't foolproof, as ships can spoof or manipulate tracking systems to obscure their origin, destination and cargo.
—
Steve Beynon, ABC News, 13 Apr. 2026
But neither strategy is foolproof.
—Nicholas Florko, The Atlantic, 11 Apr. 2026
From a rundown of the entertaining trends du jour to a foolproof guide to impressing Mom with your hosting skills to a we-did-the-hard-work-for-you menu plan, our all-in-one hosting guide is here to help.
—Lauren Phillips, Better Homes & Gardens, 7 Apr. 2026
Here’s how to style drawstring jeans for spring and beyond in five foolproof outfit ideas.
—India Roby, Glamour, 18 Mar. 2026
See All Example Sentences for foolproof
Steve Beynon, ABC News, 13 Apr. 2026
But neither strategy is foolproof.
—Nicholas Florko, The Atlantic, 11 Apr. 2026
From a rundown of the entertaining trends du jour to a foolproof guide to impressing Mom with your hosting skills to a we-did-the-hard-work-for-you menu plan, our all-in-one hosting guide is here to help.
—Lauren Phillips, Better Homes & Gardens, 7 Apr. 2026
Here’s how to style drawstring jeans for spring and beyond in five foolproof outfit ideas.
—India Roby, Glamour, 18 Mar. 2026
See All Example Sentences for foolproof
Recent Examples of Synonyms for foolproof
Adjective
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The breezy material is perfect for keeping cool during the day, yet dressy enough to pair with sandals and a slinky top for an evening out.—
Sophie Dodd,
Travel + Leisure,
29 Apr. 2026
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Set yourself up for summer entertaining with this rearrangeable option that fits up to six people, or snag a dining table and stools that a reviewer said are perfect for al fresco meals.—
Jacqueline Tempera,
Better Homes & Gardens,
29 Apr. 2026
Adjective
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Students are turning in flawless essays and problem sets, yet many can’t explain their work, a troubling sign that generative AI is replacing actual learning in higher education.—
Jocelyn Gecker,
Los Angeles Times,
28 Apr. 2026
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Foundations that once gave them a flawless base are settling into fine lines.—
Annie Blay-Tettey,
Allure,
27 Apr. 2026
Adjective
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This Oxo spinner remains one of the most reliable options, with a smooth pump mechanism and sturdy construction that holds up better than most.—
Jennifer Zyman,
Bon Appetit Magazine,
28 Apr. 2026
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In his first varsity season, the junior infielder/pitcher has developed into a reliable reliever for the Warriors.—
Steve Millar,
Chicago Tribune,
27 Apr. 2026
Cite this Entry
“Foolproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/foolproof. Accessed 1 May. 2026.
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