Which to use
“proof” is a noun and “Prost” is a name - they look or sound alike but fill different roles in a sentence.
- #43,613
- “proof” frequency rank
- #33,843
- “Prost” frequency rank
- 77456
- confusion score
Side-by-Side Comparison
| Feature | proof | Prost |
|---|---|---|
| Definition | Preuve (définitive). | Nom de famille. |
Where the eye mixes proof and Prost
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Why the eye confuses proof with Prost
These two trip readers on the page rather than in the ear: proof is \ˈpɹuːf\ while Prost is \pʁɔst\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs name), which is usually the fastest check. Our composite confusion score for this pair is 77456, derived from the frequency rank of both members and their visual similarity.
proof is recorded at frequency rank #43,613, classified as anoun, pronounced \ˈpɹuːf\. Prost is at rank #33,843, tagged as aname, pronounced \pʁɔst\.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 77456, this pair ranks #28,316 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of proof vs Prost
Shared letters: opr. Private to "proof": f. Private to "Prost": st.
"proof" · 5 letters · shape CCVVC · "Prost" · 5 letters · shape CCVCC
Known mistypes of this pair
Frequently Asked Questions
Do "proof" and "Prost" mean the same thing in a sentence?
Frequency check: "proof" vs "Prost" - which ranks higher?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "proof" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "Prost" - compare definitions side by side with the headword page. Word entry
- This pair ranks #28,316 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "proof" and "Prost" also get mixed up with nearby pairs, the highest-scored neighbour is "proof vs proud". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #28,316 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.