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
Wear them together for a foolproof spring outfit, or separately with dressier or more casual pieces in your suitcase, depending on the occasion.
—
Amelia McBride, Travel + Leisure, 21 Mar. 2025
While no security measure is completely foolproof, combining these practices can significantly reduce the risk of falling victim to infostealer malware.
—Kurt Knutsson, Cyberguy Report, Fox News, 26 Feb. 2025
How To Make It This is truly one of the easiest and most foolproof meals out here.
—Cameron Beall, Southern Living, 17 Feb. 2025
Benefit Cosmetics Benefit Cosmetics Hoola Wave Bronzing Balm $36
Benefit Cosmetics
$36
Sephora
Matte, velvety, and buildable, the Hoola Wave Bronzing Balm pays homage to the original while offering up an innovative, foolproof formula for those who prefer creams over powders.
—Sophia Panych, Allure, 1 Apr. 2025
See All Example Sentences for foolproof
Amelia McBride, Travel + Leisure, 21 Mar. 2025
While no security measure is completely foolproof, combining these practices can significantly reduce the risk of falling victim to infostealer malware.
—Kurt Knutsson, Cyberguy Report, Fox News, 26 Feb. 2025
How To Make It This is truly one of the easiest and most foolproof meals out here.
—Cameron Beall, Southern Living, 17 Feb. 2025
Benefit Cosmetics Benefit Cosmetics Hoola Wave Bronzing Balm $36
Benefit Cosmetics
$36
Sephora
Matte, velvety, and buildable, the Hoola Wave Bronzing Balm pays homage to the original while offering up an innovative, foolproof formula for those who prefer creams over powders.
—Sophia Panych, Allure, 1 Apr. 2025
See All Example Sentences for foolproof
Recent Examples of Synonyms for foolproof
Adjective
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Tranter points to that sentiment as a perfect example of why Erivo has become such a powerful voice in the entertainment industry.—
Stephen Daw,
Billboard,
2 June 2025
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The Better Sister This adaptation of Alafair Burke’s novel follows two sisters, one who is seemingly living a perfect life (Jessica Biel) and the other who is in recovery and barely scraping by (Elizabeth Banks).—
Savannah Salazar,
Vulture,
2 June 2025
Adjective
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Road playoff wins also require flawless help defense and execution down the stretch, especially against an historically great team that entered the Finals 80-18.—
Shane Young,
Forbes.com,
6 June 2025
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The number of squeaky-clean eateries across South Florida took a dip last month, with the state posting its lowest count of flawless inspections since June 2023.—
Phillip Valys,
Sun Sentinel,
5 June 2025
Adjective
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Embrace tools that highlight alternate components that match form, fit and function, and offer reliable alternatives based on factors like cost, inventory, country of origin and lifecycle status.—
Steve Flagg,
Forbes.com,
4 June 2025
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Its toll is seen as generally reliable by U.N. agencies and independent experts, though Israel has challenged its numbers.—
Wafaa Shurafa,
Los Angeles Times,
4 June 2025
Cite this Entry
“Foolproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/foolproof. Accessed 12 Jun. 2025.
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