Which to use
“urée” is a noun and “usée” is an adjective - they look or sound alike but fill different roles in a sentence.
- #48,849
- “urée” frequency rank
- #30,852
- “usée” frequency rank
- 79701
- confusion score
Side-by-Side Comparison
| Feature | urée | usée |
|---|---|---|
| Definition | Substance cristallisable, incolore, de formule chimique COH₄N₂, dont la présence caractérise l’urine de la plupart des animaux dont l’homme. | Féminin singulier de usé. |
Where the eye mixes urée and usée
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. urée and usée follow the identical consonant-vowel pattern (VCVV). Same shape at a glance is often the real trap, independent of shared letters.
Why the eye confuses urée with usée
These two trip readers on the page rather than in the ear: urée is \y.ʁe\ while usée is \y.ze\. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - r in “urée” becomes s in “usée”, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 79701, derived from the frequency rank of both members and their visual similarity.
urée is recorded at frequency rank #48,849, classified as anoun, pronounced \y.ʁe\. usée is at rank #30,852, tagged as anadj, pronounced \y.ze\.
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 79701, this pair ranks #22,689 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of urée vs usée
Shared letters: eué. Private to "urée": r. Private to "usée": s.
"urée" · 4 letters · shape VCVV · "usée" · 4 letters · shape VCVV
Frequently Asked Questions
Do "urée" and "usée" mean the same thing in a sentence?
In ordinary French text, does "urée" or "usée" 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 "urée" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "usée" - compare definitions side by side with the headword page. Word entry
- This pair ranks #22,689 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "urée" and "usée" also get mixed up with nearby pairs, the highest-scored neighbour is "urée vs urètre". Nearby pair
Confusion rank #22,689 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.