Which to use
“reçu” is an adjective and “RER” is a name - they look or sound alike but fill different roles in a sentence.
- #813
- “reçu” frequency rank
- #6,746
- “RER” frequency rank
- 7559
- confusion score
Side-by-Side Comparison
| Feature | reçu | RER |
|---|---|---|
| Definition | Qui est admis, établi, consacré. | Réseau express régional, un chemin de fer desservant l’Île-de-France, en France. |
Where the eye mixes reçu and RER
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: reçu vs RER
These two trip readers on the page rather than in the ear: reçu is \ʁə.sy\ while RER is \ɛ.ʁø.ɛʁ\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs name), which is usually the fastest check. Our composite confusion score for this pair is 7559, derived from the frequency rank of both members and their visual similarity.
reçu is recorded at frequency rank #813, classified as anadj, pronounced \ʁə.sy\. RER is at rank #6,746, tagged as aname, pronounced \ɛ.ʁø.ɛʁ\.
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 7559, this pair ranks #422,799 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of reçu vs RER
Shared letters: er. Private to "reçu": uç. Private to "RER": -.
"reçu" · 4 letters · shape CVCV · "RER" · 3 letters · shape CVC
Frequently Asked Questions
Is swapping "reçu" for "RER" ever safe?
In ordinary French text, does "reçu" or "RER" show up more?
After this comparison
Eye-level mix-up between "reçu" and "RER" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "reçu" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "RER" - compare definitions side by side with the headword page. Word entry
- This pair ranks #422,799 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "reçu" and "RER" also get mixed up with nearby pairs, the highest-scored neighbour is "Reis vs RER". Nearby pair
Confusion rank #422,799 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.