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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Tyce Peterson was a perfect 4 for 4 with a double and two RBIs.—
Shotgun Spratling,
Los Angeles Times,
2 June 2025
-
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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Impeccably dressed in a flawless double-breasted suit, he was well versed in commanding the room—and absorbing the admiring glances that often followed.—
/ CBS News,
CBS News,
25 May 2025
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In the Dodgers’ 3-1 rubber-match victory over the Diamondbacks, Hernández delivered the night’s biggest swing in the bottom of the sixth, taking a wrecking ball to what had been a flawless outing from Burnes with a three-run home run that turned the game upside down.—
Houston Mitchell,
Los Angeles Times,
22 May 2025
Adjective
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To be fair to les frères Dardennes, there is a reliable level of unshowy competence as well as an integrity to their insistence on embedding with unglamorous, recognizable people.—
Sophie Monks Kaufman,
IndieWire,
23 May 2025
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The problem with inland water Environmental scientists have a reliable way of monitoring the water quality at popular coastal beaches, often by taking samples on a daily or weekly basis.—
Angela Haupt,
Time,
23 May 2025
Cite this Entry
“Foolproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/foolproof. Accessed 5 Jun. 2025.
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