foolproof
1 synonym and 1 antonym for foolproof, grouped by meaning and by how common each one is.
Adj — Designed so simply or solidly that it can't go wrong, even if misused.
Synonyms
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
unfailing
Antonyms
How to use foolproof
The word patterns that sound natural to a native speaker.
a foolproof plan
foolproof method
Etymology
Built from fool + proof, meaning "proof against fools," i.e. safe even from careless use.
Full origin of foolproof →Frequently asked questions
What does “foolproof” mean?
The word “foolproof” means designed so simply or solidly that it can't go wrong, even if misused. In plain terms, so reliable or simple that it's very hard to get wrong.
How do you pronounce “foolproof”?
“Foolproof” is pronounced FOOL-proof (/ˈfuːl ˌpɹuːf/ in IPA).
How do you use “foolproof” in a sentence?
Here is “foolproof” used in a sentence: “She swore by her foolproof recipe for chocolate cake.”
What part of speech is “foolproof”?
“Foolproof” is an adjective.
