prepvsprouWhich spelling fits?

Quick tell: prep is a noun, prou is an adverb, so they fill different roles in a sentence.

Which to use

“prep” is a noun and “prou” is an adverb - they look or sound alike but fill different roles in a sentence.

#49,867
“prep” frequency rank
#27,198
“prou” frequency rank
77065
confusion score

Side-by-Side Comparison

Feature prep prou
Definition Préposition. Assez, beaucoup.

Where the eye mixes prep and prou

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
prep
4 ch
prou

Look-alike desk: prep vs prou

These two trip readers on the page rather than in the ear: prep is \ˈprɛp\ while prou is \pʁu\. 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 adverb), which is usually the fastest check. Our composite confusion score for this pair is 77065, derived from the frequency rank of both members and their visual similarity.

prep is recorded at frequency rank #49,867, classified as anoun, pronounced \ˈprɛp\. prou is at rank #27,198, tagged as anadv, pronounced \pʁu\.

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 77065, this pair ranks #29,413 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of prep vs prou

Shared letters: pr. Private to "prep": e. Private to "prou": ou.

"prep" · 4 letters · shape CCVC  ·  "prou" · 4 letters · shape CCVV

Known mistypes of this pair

  • prepperp · pprep · prepp · prpe · prrep · rpep
  • proupprou · prrou · pruo · rpou

Frequently Asked Questions

Do "prep" and "prou" mean the same thing in a sentence?
No - they are not even the same part of speech. "prep" is a noun and "prou" an adverb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "prep" or "prou"?
"prou" is the more common of the two: it sits at frequency rank #27,198 in our French list, against #49,867 for "prep". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "prep" and "prou" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "prep" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "prou" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #29,413 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "prep" and "prou" also get mixed up with nearby pairs, the highest-scored neighbour is "peep vs prep". 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 #29,413 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list