fool·​proof | \ ˈfül-ˌprüf How to pronounce foolproof (audio) \

Definition of foolproof

: so simple, plain, or reliable as to leave no opportunity for error, misuse, or failure a foolproof plan

Examples of foolproof in a Sentence

DNA fingerprinting gives police a virtually foolproof way to link a suspect to a crime scene.

Recent Examples on the Web

However, the firmer pencil ensures that the filling-in process is foolproof and all your work stays put. Devon Abelman, Allure, "Why Yara Shahidi's Makeup Artist Emily Cheng Swears by ColourPop's $5 Brow Pencil," 22 Aug. 2018 And the mayonnaise helps to make the recipe foolproof. Kitty Greenwald, WSJ, "Why Mayonnaise is Magic," 9 Nov. 2018 Based on court filings by the FBI, the U.S. attorney and interviews with Crawford and others who knew him, Jenkins allegedly executed an almost-foolproof scheme. star-telegram, "A tale of trust betrayed at landmark Corsicana bakery | Fort Worth Star-Telegram," 11 Mar. 2014 But paying people to keep silent, as both Trump and Weinstein learned, is not foolproof. Ben Widdicombe, Town & Country, "How Much Does It Cost to Keep Your Name Out of the News?," 18 Jan. 2019 Pink is foolproof and works across the board, while brown is an easy, grounding choice that adds balance when dark lipstick or heavy lashes are in play. Michelle Sulcov, Glamour, "These Before-and-After Photos Show What a Difference Blush Can Make," 31 Aug. 2018 Jeans and t-shirts are the backbone of any good summer wardrobe, but the staples aren’t always foolproof. Janelle Okwodu, Vogue, "How to Make White Denim Look Flattering? Just Ask Cara Delevingne," 25 July 2018 Getting a perfectly blended, flawless foundation look is almost foolproof with this tool. Mary Clarke, Good Housekeeping, "We Tried It: The Beautyblender Sponge," 14 Mar. 2014 Owning the rocker vibe is as easy as following this foolproof equation: grunge graphic tee + destroyed denim + faux leather + vintage-y sunnies. Kelsey Stiegman, Seventeen, "Super-Hot Outfits Perfect for Your Next Concert," 28 Dec. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'foolproof.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of foolproof

1902, in the meaning defined above

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Statistics for foolproof

Last Updated

14 Apr 2019

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Time Traveler for foolproof

The first known use of foolproof was in 1902

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More Definitions for foolproof



English Language Learners Definition of foolproof

: done, made, or planned so well that nothing can go wrong


fool·​proof | \ ˈfül-ˈprüf How to pronounce foolproof (audio) \

Kids Definition of foolproof

: done, made, or planned so well that nothing can go wrong a foolproof recipe

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More from Merriam-Webster on foolproof

Rhyming Dictionary: Words that rhyme with foolproof

Thesaurus: All synonyms and antonyms for foolproof

Spanish Central: Translation of foolproof

Nglish: Translation of foolproof for Spanish Speakers

Comments on foolproof

What made you want to look up foolproof? Please tell us where you read or heard it (including the quote, if possible).


to move or proceed with twists and turns

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