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
No method is completely foolproof, so avoiding contaminated water remains the safest strategy.
—
Ryan Brennan,
Kansas City Star,
24 June 2026
However, essential oils are best used as a preventative measure, not a foolproof solution against wasps, says Rick Young, owner of Youngs Pest Control.
—
Louise Parks,
Martha Stewart,
21 June 2026
This all sounds impressive enough, but even futuristic weapons like lasers are not foolproof on the battlefield.
—
Christopher McFadden,
Interesting Engineering,
20 June 2026
Matching sets are always a foolproof way to instantly put together, and this guest's coordinating pink denim proves the point.
—
Amanda Le,
InStyle,
20 June 2026
See All Example Sentences for foolproof
Ryan Brennan,
Kansas City Star,
24 June 2026
However, essential oils are best used as a preventative measure, not a foolproof solution against wasps, says Rick Young, owner of Youngs Pest Control.
—
Louise Parks,
Martha Stewart,
21 June 2026
This all sounds impressive enough, but even futuristic weapons like lasers are not foolproof on the battlefield.
—
Christopher McFadden,
Interesting Engineering,
20 June 2026
Matching sets are always a foolproof way to instantly put together, and this guest's coordinating pink denim proves the point.
—
Amanda Le,
InStyle,
20 June 2026
See All Example Sentences for foolproof
Recent Examples of Synonyms for foolproof
Adjective
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Mexico enters a must-win World Cup knockout against Ecuador at Azteca after a perfect group stage, three clean sheets and record-shattering crowds.
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Diop found separation behind all-world defender Virgil van Dijk and headed Chemsdine Talbi's perfect cross into the goal.
Adjective
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Because autonomous agents execute end-to-end business logic, deployment requires a flawless blend of operational domain expertise (business) and systemic oversight (IT).
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The fluffy brush made with vegan bristles is angled for flawless foundation application.
Adjective
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Andrews, a lifelong resident of Red Hook Houses West, said the community has waited long enough for a reliable pool.
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No reliable figures are available for battlefield casualties in the war.
Cite this Entry
“Foolproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/foolproof. Accessed 5 Jul. 2026.
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