Which to use
“Alter” is a noun and “alterne” is an adjective - they look or sound alike but fill different roles in a sentence.
- #19,203
- “Alter” frequency rank
- #24,852
- “alterne” frequency rank
- 44055
- confusion score
Side-by-Side Comparison
| Feature | Alter | alterne |
|---|---|---|
| Definition | Âge. | Désigne les angles formés par deux droites parallèles, avec les côtés opposés d’une même sécante. |
Where the eye mixes Alter and alterne
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.
Look-alike desk: Alter vs alterne
These two trip readers on the page rather than in the ear: Alter is \ˈal.tɐ\ while alterne is \al.tɛʁn\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “Alter” sits inside “alterne”, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 44055, derived from the frequency rank of both members and their visual similarity.
Alter is recorded at frequency rank #19,203, classified as anoun, pronounced \ˈal.tɐ\. alterne is at rank #24,852, tagged as anadj, pronounced \al.tɛʁn\.
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 44055, this pair ranks #213,387 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of Alter vs alterne
Shared letters: aelrt. Private to "Alter": -. Private to "alterne": n.
"Alter" · 5 letters · shape VCCVC · "alterne" · 7 letters · shape VCCVCCV
Known mistypes of this pair
Frequently Asked Questions
Do "Alter" and "alterne" mean the same thing in a sentence?
In ordinary French text, does "Alter" or "alterne" show up more?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "Alter" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "alterne" - compare definitions side by side with the headword page. Word entry
- This pair ranks #213,387 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "Alter" and "alterne" also get mixed up with nearby pairs, the highest-scored neighbour is "Alter vs astor". 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 #213,387 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.