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
However, it's not ensured to be a foolproof method to verify identity if travelers forget their ID.
—
Mariyam Muhammad, Cincinnati Enquirer, 3 Dec. 2025
Bier warned that the feature is not foolproof, as travel, as well as VPNs, could affect where the accounts say they are based.
—Hadas Gold, CNN Money, 25 Nov. 2025
Here are some foolproof recipes for the classics from cookbook author Robin Miller.
—Endia Fontanez, AZCentral.com, 18 Nov. 2025
Setting up a new user profile is a foolproof way to lock in this initial $20 bonus.
—Tyler Everett, MSNBC Newsweek, 17 Nov. 2025
See All Example Sentences for foolproof
Mariyam Muhammad, Cincinnati Enquirer, 3 Dec. 2025
Bier warned that the feature is not foolproof, as travel, as well as VPNs, could affect where the accounts say they are based.
—Hadas Gold, CNN Money, 25 Nov. 2025
Here are some foolproof recipes for the classics from cookbook author Robin Miller.
—Endia Fontanez, AZCentral.com, 18 Nov. 2025
Setting up a new user profile is a foolproof way to lock in this initial $20 bonus.
—Tyler Everett, MSNBC Newsweek, 17 Nov. 2025
See All Example Sentences for foolproof
Recent Examples of Synonyms for foolproof
Adjective
-
Complete with zip pockets, a continuous drawstring loop, and reflective properties, these leggings are perfect for hiking, jogging, and other outdoor activities.—
Amelia McBride,
Travel + Leisure,
11 Jan. 2026
-
The 1-liter purse’s faux fur exterior feels cozy against the skin and is ideal for winter styling, according to Lululemon shoppers who give it a near-perfect rating.—
Mariana Best,
Better Homes & Gardens,
11 Jan. 2026
Adjective
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Jennings, in contrast, was nearly flawless for the first two quarters.—
Kyle Kensing,
Dallas Morning News,
3 Jan. 2026
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Her dark hair was swept back into a flawless chic bun.—
Meg Walters,
InStyle,
30 Dec. 2025
Adjective
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For decades, Venezuela was one of America's closest partners in Latin America, a reliable energy supplier, and a democracy that helped anchor the region.—
Arkansas Online,
Arkansas Online,
9 Jan. 2026
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Finding the right toiletry bag for your next trip is as important as buying a reliable carry-on or a hassle-free backpack.—
Michelle Baricevic,
Travel + Leisure,
9 Jan. 2026
Cite this Entry
“Foolproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/foolproof. Accessed 12 Jan. 2026.
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