Which to use
“ru” is a noun and “ruer” is a verb - they look or sound alike but fill different roles in a sentence.
- #16,467
- “ru” frequency rank
- #39,989
- “ruer” frequency rank
- 56456
- confusion score
Side-by-Side Comparison
| Feature | ru | ruer |
|---|---|---|
| Definition | Petit ruisseau. | Jeter ou lancer vivement. |
Where the eye mixes ru and ruer
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: ru vs ruer
These two trip readers on the page rather than in the ear: ru is \ʁy\ while ruer is \ʁɥe\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “ru” sits inside “ruer”, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 56456, derived from the frequency rank of both members and their visual similarity.
ru is recorded at frequency rank #16,467, classified as anoun, pronounced \ʁy\. ruer is at rank #39,989, tagged as averb, pronounced \ʁɥe\.
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 56456, this pair ranks #120,996 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of ru vs ruer
Shared letters: ru. Private to "ru": -. Private to "ruer": e.
"ru" · 2 letters · shape CV · "ruer" · 4 letters · shape CVVC
Known mistypes of this pair
- ruer ← reur · rruer · ruerr · rure · urer
Frequently Asked Questions
Is swapping "ru" for "ruer" ever safe?
In ordinary French text, does "ru" or "ruer" show up more?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "ru" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ruer" - compare definitions side by side with the headword page. Word entry
- This pair ranks #120,996 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "ru" and "ruer" also get mixed up with nearby pairs, the highest-scored neighbour is "rouet vs ruer". 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 #120,996 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.