FOOLPROOF Synonyms: 20 Similar and Opposite Words

foolproof

adjective

Definition of foolproof

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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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of foolproof Just pair them with a white T-shirt à la Hudson, Lawrence, and Lopez for a foolproof monochrome outfit that’ll look cute at the beach, bars, or even brunch. — Alyssa Grabinski, PEOPLE, 4 July 2026 There are several potential solutions, but none are foolproof. — John Romano, The Orlando Sentinel, 29 June 2026 Two different kinds of potatoes and the foolproof combo of seasonings will see you through this recipe. — Patricia S York, Southern Living, 27 June 2026 The strategy isn't foolproof by any means, even in intra-party Democratic primaries. — Oren Oppenheim, ABC News, 26 June 2026 See All Example Sentences for foolproof

Recent Examples of Synonyms for foolproof

Adjective

From there, the acceleration and timing of his run are perfect to meet Saka’s clipped cross at the back post.

— Thom Harris, New York Times, 13 July 2026
The pool is also fit with a complete outdoor kitchen and pavilion, perfect for a barbecue.

— Fort Worth Star-Telegram, Fort Worth Star-Telegram, 13 July 2026

Definition of perfect

Adjective

Thickening mist, root volumizer, dry shampoo, and texturizing spray all pair seamlessly with the brand's iconic root touchup products for the ultimate hack in keeping your hair looking thick, full and flawless between salon visits.

— ABC News, ABC News, 14 July 2026
An easy summer staple, broderie anglaise (also known as eyelet lace) makes a flawless transition to fall when styled top-to-bottom, pairing airy lace blouses with equally sweet shorts, skirts, or trousers.

— Rosie Jarman, Vogue, 10 July 2026

Definition of flawless

Adjective

As governments and technology companies search for reliable, low-carbon power solutions, micro-modular reactors are emerging as one of several technologies being explored to support future electricity demand.

— Prabhat Ranjan Mishra, Interesting Engineering, 16 July 2026
Industrial and real estate investment plunged in the first half of the year, indicating that such longtime pillars of the Chinese economy are becoming less reliable in offsetting slow consumption.

— Stephanie Yang, CNN Money, 15 July 2026

Definition of reliable

Browse Nearby Words

foolishness

foolproof

fools

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Cite this Entry

Style

“Foolproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/foolproof. Accessed 17 Jul. 2026.

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Synonyms of foolproof

adjective

Example Sentences

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