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
There’s no foolproof answer, except perhaps to bring expensive items inside at night.
—
Marla Jo Fisher, Oc Register, 14 Oct. 2025
This chocolate Advent calendar is a foolproof Christmas gift for teenagers of all ages, with its 24 days of delicious milk chocolate Lindt balls and teddy bears.
—Malia Griggs, Glamour, 9 Oct. 2025
The Travelon Anti-theft Classic Mini Shoulder Bag is an even more foolproof selection with five points of security from its slash-proof straps to its locking zippers.
—Merrell Readman, Travel + Leisure, 7 Oct. 2025
While traditional bread is foolproof option, Atlas recommends giving focaccia a try instead (sourdough is so 2020).
—Cori Sears, Better Homes & Gardens, 29 Sep. 2025
See All Example Sentences for foolproof
Marla Jo Fisher, Oc Register, 14 Oct. 2025
This chocolate Advent calendar is a foolproof Christmas gift for teenagers of all ages, with its 24 days of delicious milk chocolate Lindt balls and teddy bears.
—Malia Griggs, Glamour, 9 Oct. 2025
The Travelon Anti-theft Classic Mini Shoulder Bag is an even more foolproof selection with five points of security from its slash-proof straps to its locking zippers.
—Merrell Readman, Travel + Leisure, 7 Oct. 2025
While traditional bread is foolproof option, Atlas recommends giving focaccia a try instead (sourdough is so 2020).
—Cori Sears, Better Homes & Gardens, 29 Sep. 2025
See All Example Sentences for foolproof
Recent Examples of Synonyms for foolproof
Adjective
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Art directors Jason Kirschner and Kait Taylor took advantage of that and then some, designing a period-perfect art deco set completely grayscaled.—
Dave Quinn,
PEOPLE,
31 Oct. 2025
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Cozy up in the Treasure & Bond Alpaca & Wool Rib Sweater, 60 percent off, and a soft, stylish layer that’s perfect for fall.—
Rosie Marder,
Travel + Leisure,
31 Oct. 2025
Adjective
-
What followed was a flawless and truly phenomenal run.—
Daniel Dylan Wray,
Pitchfork,
5 Nov. 2025
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Her makeup, by Georgie Eisdell, centered on the witchy red tone, with a flawless base and soft bronze cheek contour, a delicate smoky brown eye and black mascara.—
Anna Cafolla,
Vogue,
2 Nov. 2025
Adjective
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Clean energy is driving a state of 40 million people, offering more affordable energy and creating reliable jobs that will power the future.—
MSNBC Newsweek,
MSNBC Newsweek,
6 Nov. 2025
-
Becton is not reliable at this stage.—
Daniel Popper,
New York Times,
5 Nov. 2025
Cite this Entry
“Foolproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/foolproof. Accessed 6 Nov. 2025.
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