Which to use
“rai” and “rou” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #22,057
- “rai” frequency rank
- #48,169
- “rou” frequency rank
- 70226
- confusion score
Side-by-Side Comparison
| Feature | rai | rou |
|---|---|---|
| Definition | Rayon, trait de lumière. | Synonyme de rohu (poisson). |
Where the eye mixes rai and rou
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: rai vs rou
A purely visual mix-up. rai (\ʁɛ\) and rou (\ʁu\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 70226, derived from the frequency rank of both members and their visual similarity.
rai is recorded at frequency rank #22,057, classified as anoun, pronounced \ʁɛ\. rou is at rank #48,169, tagged as anoun, pronounced \ʁu\.
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 70226, this pair ranks #52,166 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of rai vs rou
Shared letters: r. Private to "rai": ai. Private to "rou": ou.
"rai" · 3 letters · shape CVV · "rou" · 3 letters · shape CVV
Frequently Asked Questions
Can "rai" and "rou" be used interchangeably?
Which is more common, "rai" or "rou"?
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 "rai" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "rou" - compare definitions side by side with the headword page. Word entry
- This pair ranks #52,166 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "rai" and "rou" also get mixed up with nearby pairs, the highest-scored neighbour is "rou vs roya". Nearby pair
Confusion rank #52,166 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.