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
From a rundown of the entertaining trends du jour to a foolproof guide to impressing Mom with your hosting skills to a we-did-the-hard-work-for-you menu plan, our all-in-one hosting guide is here to help.
—
Lauren Phillips, Better Homes & Gardens, 7 Apr. 2026
Here’s how to style drawstring jeans for spring and beyond in five foolproof outfit ideas.
—India Roby, Glamour, 18 Mar. 2026
Make things simpler by building your wardrobe around a few foolproof hero pieces.
—Amanda Le, InStyle, 14 Mar. 2026
Pretty is almost foolproof in a time of uncertainty.
—Rachel Tashjian, CNN Money, 10 Mar. 2026
See All Example Sentences for foolproof
Lauren Phillips, Better Homes & Gardens, 7 Apr. 2026
Here’s how to style drawstring jeans for spring and beyond in five foolproof outfit ideas.
—India Roby, Glamour, 18 Mar. 2026
Make things simpler by building your wardrobe around a few foolproof hero pieces.
—Amanda Le, InStyle, 14 Mar. 2026
Pretty is almost foolproof in a time of uncertainty.
—Rachel Tashjian, CNN Money, 10 Mar. 2026
See All Example Sentences for foolproof
Recent Examples of Synonyms for foolproof
Adjective
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If a plan sounds too perfect, look at the details to ensure none of them have been overlooked.—
Tarot.com,
Hartford Courant,
16 Apr. 2026
-
Lightweight and breathable, this set is perfect for exploring new places or enjoying a leisurely afternoon.—
Paris Wilson,
Travel + Leisure,
15 Apr. 2026
Adjective
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For a flawless finish—up to a week of chip-free wear—apply two thin coats followed by your favorite top coat.—
Iman Balagam,
Vogue,
21 Apr. 2026
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His escape route was wild, his execution was flawless and he was never seen again.—
Samantha Agate,
Kansas City Star,
20 Apr. 2026
Adjective
-
Ellie Roebuck Hasn’t been capped since 2023 but back in the WSL with Aston Villa and back in Wiegman’s squad as a reliable reserve ‘keeper.—
Megan Feringa,
New York Times,
20 Apr. 2026
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The genre hit its stride in the late-’90s and early-2000s, as the formula became a reliable commercial play.—
Alison Foreman,
IndieWire,
20 Apr. 2026
Cite this Entry
“Foolproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/foolproof. Accessed 22 Apr. 2026.
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