Which to use
“prior” is an adjective and “pro” is a noun - they look or sound alike but fill different roles in a sentence.
- #43,083
- “prior” frequency rank
- #1,039
- “pro” frequency rank
- 44122
- confusion score
Side-by-Side Comparison
| Feature | prior | pro |
|---|---|---|
| Definition | Antérieur, préalable. | Professionnel, professionnelle. |
Where the eye mixes prior and pro
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Why the eye confuses prior with pro
These two trip readers on the page rather than in the ear: prior is \ˈpɹaɪ.ə\ while pro is \pʁo\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 44122, derived from the frequency rank of both members and their visual similarity.
prior is recorded at frequency rank #43,083, classified as anadj, pronounced \ˈpɹaɪ.ə\. pro is at rank #1,039, tagged as anoun, pronounced \pʁo\.
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 44122, this pair ranks #212,884 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of prior vs pro
Shared letters: opr. Private to "prior": i. Private to "pro": -.
"prior" · 5 letters · shape CCVVC · "pro" · 3 letters · shape CCV
Known mistypes of this pair
- prior ← piror · pprior · priorr · priro · proir · prrior · rpior
Frequently Asked Questions
Do "prior" and "pro" mean the same thing in a sentence?
In ordinary French text, does "prior" or "pro" show up more?
Useful next steps
Eye-level mix-up between "prior" and "pro" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "prior" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "pro" - compare definitions side by side with the headword page. Word entry
- This pair ranks #212,884 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "prior" and "pro" also get mixed up with nearby pairs, the highest-scored neighbour is "priée vs prior". 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 #212,884 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.