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
None of this, of course, provides a foolproof hedge against the risk of Trump making concessions on Taiwan in exchange for a trade deal or a better relationship with Xi.
—
Philip H. Gordon, Foreign Affairs, 22 Sep. 2025
Available in four natural-looking shades that are neither too red nor too gray, this whisper-soft powder offers a foolproof way to accentuate your arches and create the illusion of fullness without the reality of smudges or streaks.
—Sophia Panych, Allure, 16 Sep. 2025
Not a foolproof buy signal, though the past two times this occurred preceded a decent further up leg.
—Michael Santoli, CNBC, 9 Sep. 2025
Lego sets are a foolproof way to keep everyone entertained, and Target recently dropped so many new kits.
—Rachel Trujillo, PEOPLE, 8 Sep. 2025
See All Example Sentences for foolproof
Philip H. Gordon, Foreign Affairs, 22 Sep. 2025
Available in four natural-looking shades that are neither too red nor too gray, this whisper-soft powder offers a foolproof way to accentuate your arches and create the illusion of fullness without the reality of smudges or streaks.
—Sophia Panych, Allure, 16 Sep. 2025
Not a foolproof buy signal, though the past two times this occurred preceded a decent further up leg.
—Michael Santoli, CNBC, 9 Sep. 2025
Lego sets are a foolproof way to keep everyone entertained, and Target recently dropped so many new kits.
—Rachel Trujillo, PEOPLE, 8 Sep. 2025
See All Example Sentences for foolproof
Recent Examples of Synonyms for foolproof
Adjective
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His size and demeanor are perfect for wrangling crowds and looking over heads at Titans games to see if people are trying to access vehicles in the parking lot, officers say.—
Craig Shoup,
Nashville Tennessean,
3 Oct. 2025
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Neville, who earned his degree in business administration from Regis, was a frequent recipient of perfect ratings from the American Conservative Union and Americans for Prosperity.—
Dave Smith,
Fortune,
3 Oct. 2025
Adjective
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The flawless look was a masterclass in being effortlessly cool.—
Essence,
Essence,
1 Oct. 2025
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Aside from a penalty Monday, Paul was nearly flawless in pass protection, allowing no quarterback pressures in 30 pass-blocking opportunities in a 27-21 win against the Jets.—
Barry Jackson,
Miami Herald,
30 Sep. 2025
Adjective
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Public chargers also need to be reliable.—
Eileen Falkenberg-Hull,
MSNBC Newsweek,
1 Oct. 2025
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During the past decade, Tranter has established himself as one of the music industry’s most reliable hitmakers, thanks to his clever, boisterous lyricism and dramatic, over-the-top choruses and hooks.—
Ethan Millman,
HollywoodReporter,
1 Oct. 2025
Cite this Entry
“Foolproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/foolproof. Accessed 6 Oct. 2025.
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