Which to use
“Isère” is a name and “isle” is a noun - they look or sound alike but fill different roles in a sentence.
- #10,343
- “Isère” frequency rank
- #11,988
- “isle” frequency rank
- 22331
- confusion score
Side-by-Side Comparison
| Feature | Isère | isle |
|---|---|---|
| Definition | Rivière du sud-est de la France. | Île. |
Where the eye mixes Isère and isle
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. Isère runs 5 letters (VCVCV) against isle's 4 (VCCV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses Isère with isle
These two trip readers on the page rather than in the ear: Isère is \i.zɛʁ\ while isle is \il\. 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 (name vs noun), which is usually the fastest check. Our composite confusion score for this pair is 22331, derived from the frequency rank of both members and their visual similarity.
Isère is recorded at frequency rank #10,343, classified as aname, pronounced \i.zɛʁ\. isle is at rank #11,988, tagged as anoun, pronounced \il\.
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 22331, this pair ranks #358,558 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of Isère vs isle
Shared letters: eis. Private to "Isère": rè. Private to "isle": l.
"Isère" · 5 letters · shape VCVCV · "isle" · 4 letters · shape VCCV
Known mistypes of this pair
- isle ← isel · islle · issle · sile
Frequently Asked Questions
Is swapping "Isère" for "isle" ever safe?
Frequency check: "Isère" vs "isle" - which ranks higher?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "Isère" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "isle" - compare definitions side by side with the headword page. Word entry
- This pair ranks #358,558 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "Isère" and "isle" also get mixed up with nearby pairs, the highest-scored neighbour is "isi vs isle". 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 #358,558 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.