Meaning & Definition of word "Foolproof"

Foolproof

/ˈfuːlˌpruːf/

adjective:

  • 1. Incapable of failing or making mistakes; guaranteed to succeed.
    • Example: The instructions provided were so clear that even a beginner could follow them; they were truly foolproof.
  • 2. Designed to be safe from human error.
    • Example: The new safety features in the machinery are foolproof, ensuring that accidents are almost impossible.
  • 3. Simple and easy to use, often to the extent that no special skills are required.
    • Example: The app has a foolproof interface that anyone can navigate without prior experience.

Etymology

The term is derived from 'fool' + 'proof', meaning resistant to foolish mistakes.

Common Phrases and Expressions

foolproof plan:

A plan that is unlikely to fail.

foolproof method:

A method that is guaranteed to be effective.

foolproof system:

A system designed to prevent mistakes.

Related Words

error-free:

Capable of being executed without mistakes.

dummy-proof:

Designed to be so easy to use that even a person lacking knowledge can operate it.

Slang Meanings of foolproof

Meaning: So simple that even a fool can do it.

Example Sentence: Programming this app is foolproof; even my grandma could do it.

Meaning: Guaranteed to succeed without any issues.

Example Sentence: This strategy is foolproof – there's no way it can fail.