Definition

Something that is designed to be completely reliable and easy to use, preventing mistakes or failures.

Example

The instructions for assembling the furniture were foolproof, making it easy for anyone to follow.

Conversation

I found a recipe that claims to be foolproof for beginners.

Oh really? That sounds perfect for me since I’m not a great cook.

Yeah, it even has step-by-step instructions to make it easy.

I’ll definitely give it a try; I need something foolproof to impress my friends!

Synonyms & Antonyms

Root Explanation

Foolproof → It is formed from "fool" (from Old English *fola*, meaning a person lacking in judgment) and "proof" (from Old English *profa*, meaning to test or to demonstrate). The word "foolproof" means designed to be so simple or reliable that even a fool cannot fail to use it correctly.

Memory Tip

Think of something that is so simple that even a person lacking judgment ('fool') cannot fail to use it correctly ('proof').

Visually Confused Words