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
Pretty is almost foolproof in a time of uncertainty.
—
Rachel Tashjian, CNN Money, 10 Mar. 2026
Beige Much like gray, beige is often seen as a foolproof choice.
—Marisa Suzanne Martin, The Spruce, 7 Mar. 2026
To avoid disaster, the two hatch a foolproof plan.
—Randy Myers, Mercury News, 4 Mar. 2026
Protective barriers like rug pads can help with distributing the weight from a heavy piece of furniture, but these aren't foolproof, Cox says.
—Caroline Lubinsky, Martha Stewart, 19 Feb. 2026
See All Example Sentences for foolproof
Rachel Tashjian, CNN Money, 10 Mar. 2026
Beige Much like gray, beige is often seen as a foolproof choice.
—Marisa Suzanne Martin, The Spruce, 7 Mar. 2026
To avoid disaster, the two hatch a foolproof plan.
—Randy Myers, Mercury News, 4 Mar. 2026
Protective barriers like rug pads can help with distributing the weight from a heavy piece of furniture, but these aren't foolproof, Cox says.
—Caroline Lubinsky, Martha Stewart, 19 Feb. 2026
See All Example Sentences for foolproof
Recent Examples of Synonyms for foolproof
Adjective
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Don’t worry too much about things being perfect, either.—
Tarot.com,
Sun Sentinel,
19 Mar. 2026
-
Ahead, 20 properties to book for your next postcard-perfect getaway.—
Nicole Kliest,
Vogue,
19 Mar. 2026
Adjective
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Fittingly, her goddess braids, done by hairstylist Coree Moreno using Bellami extensions, looked flawless.—
Kara Jillian Brown,
InStyle,
16 Mar. 2026
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Chandran's skin, prepped by Joanna Czech with the Swiss Perfection collection, served as a flawless canvas for her makeup, composed of gorgeous shades of honey and brown that work with absolutely anything—but especially her gorgeous, green gown.—
Marci Robin,
Allure,
15 Mar. 2026
Adjective
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And while Quinnen Williams and Kenny Clark serve as one of the better defensive tackle duos in the league and Otito Ogbonnia provides reliable depth, having another quality, reliable player in the middle may end up being necessary as well.—
Nick Harris,
Fort Worth Star-Telegram,
17 Mar. 2026
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With increasing demand for modern defense systems worldwide, investments like this expansion are considered essential for maintaining reliable production and supply.—
Prabhat Ranjan Mishra,
Interesting Engineering,
16 Mar. 2026
Cite this Entry
“Foolproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/foolproof. Accessed 23 Mar. 2026.
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