Which to use
“alterne” is an adjective and “alterner” is a verb - they look or sound alike but fill different roles in a sentence.
- #24,852
- “alterne” frequency rank
- #30,458
- “alterner” frequency rank
- 55310
- confusion score
Side-by-Side Comparison
| Feature | alterne | alterner |
|---|---|---|
| Definition | Désigne les angles formés par deux droites parallèles, avec les côtés opposés d’une même sécante. | Faire successivement et tour à tour une même chose en parlant de deux personnes. |
Where the eye mixes alterne and alterner
Muted = shared; highlighted = the visual trap. They share 7 letters in sequence. alterne runs 7 letters (VCCVCCV) against alterner's 8 (VCCVCCVC) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses alterne with alterner
These two trip readers on the page rather than in the ear: alterne is \al.tɛʁn\ while alterner is \al.tɛʁ.ne\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “alterne” sits inside “alterner”, and the parts of speech differ too (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 55310, derived from the frequency rank of both members and their visual similarity.
alterne is recorded at frequency rank #24,852, classified as anadj, pronounced \al.tɛʁn\. alterner is at rank #30,458, tagged as averb, pronounced \al.tɛʁ.ne\.
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 55310, this pair ranks #128,278 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of alterne vs alterner
Shared letters: aelnrt. Private to "alterne": -. Private to "alterner": -.
"alterne" · 7 letters · shape VCCVCCV · "alterner" · 8 letters · shape VCCVCCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "alterne" for "alterner" ever safe?
In ordinary French text, does "alterne" or "alterner" show up more?
Useful next steps
Eye-level mix-up between "alterne" and "alterner" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "alterne" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "alterner" - compare definitions side by side with the headword page. Word entry
- This pair ranks #128,278 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "alterne" and "alterner" also get mixed up with nearby pairs, the highest-scored neighbour is "aliéner vs alterner". 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 #128,278 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.