Which to use
“A1” and “A3” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #17,858
- “A1” frequency rank
- #20,334
- “A3” frequency rank
- 38192
- confusion score
Side-by-Side Comparison
| Feature | A1 | A3 |
|---|---|---|
| Definition | Format d'une feuille de 594,6 mm sur 840,9. | Format de papier mesurant 420 mm × 297 mm. |
Where the eye mixes A1 and A3
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between A1 and A3
A purely visual mix-up. A1 (\a.œ̃\) and A3 (\ɑ.tʁwa\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by a single letter - 1 in “A1” becomes 3 in “A3”. Our composite confusion score for this pair is 38192, derived from the frequency rank of both members and their visual similarity.
A1 is recorded at frequency rank #17,858, classified as anoun, pronounced \a.œ̃\. A3 is at rank #20,334, tagged as anoun, pronounced \ɑ.tʁwa\.
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 38192, this pair ranks #257,007 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of A1 vs A3
Shared letters: a. Private to "A1": -. Private to "A3": -.
"A1" · 1 letters · shape V · "A3" · 1 letters · shape V
Frequently Asked Questions
Is swapping "A1" for "A3" ever safe?
In ordinary French text, does "A1" or "A3" show up more?
What to do next
Eye-level mix-up between "A1" and "A3" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "A1" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "A3" - compare definitions side by side with the headword page. Word entry
- This pair ranks #257,007 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "A1" and "A3" also get mixed up with nearby pairs, the highest-scored neighbour is "A3 vs aur". Nearby pair
Confusion rank #257,007 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.