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 One foolproof way to do as the Germans do is to wear their brands. — Carolin Lehmann, Travel + Leisure, 23 Aug. 2026 Luckily, there’s a foolproof way to stay dry while looking fly — cuffed jeans. — Alyssa Grabinski, PEOPLE, 20 Aug. 2026 But, as anyone who’s watched an icy soda turn watery on a summer day can probably gather, moving hard ice to warm climates wasn’t exactly foolproof. — Mack Degeurin, Popular Science, 19 Aug. 2026 First, the cream-to-powder texture is foolproof—the edges smoke out with the slightest tap, making blending a dream. — Kiana Murden, Vogue, 17 Aug. 2026 See All Example Sentences for foolproof

Recent Examples of Synonyms for foolproof

Adjective

This means their meaning is easier to guess for someone without any previous knowledge of the gesture or language being spoken; perfect for creating a new language from scratch.

— Hannah Little, Scientific American, 20 Sep. 2026
Dolce’s cool, reductive architectural sense, with its airy vistas and great open spaces inside and out (perfect for their energetic Labradors, Lola and her son, Dali), is cluttered with the eclectic bounty that Gabbana has assembled over the years.

— Hamish Bowles, Vogue, 20 Sep. 2026

Definition of perfect

Adjective

Short or long, nail health is a key factor this fall, a manicure-first approach evidenced by the rise of short, minimalist nails and the flawless cuticles achieved via the Russian manicure, currently trending.

— Calin Van Paris, Vogue, 22 Sep. 2026
This pound cake has that flawless tight, velvety crumb and a balanced richness from the triple-threat combination of butter, cream cheese, and sour cream in the batter.

— Alana Al-Hatlani, Southern Living, 18 Sep. 2026

Definition of flawless

Browse Nearby Words

foolishness

foolproof

fools

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“Foolproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/foolproof. Accessed 25 Sep. 2026.

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Synonyms of foolproof

adjective

Example Sentences

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