Which to use
“A1” is a noun and “ah” is an onomatopoeia - they look or sound alike but fill different roles in a sentence.
- #17,858
- “A1” frequency rank
- #396
- “ah” frequency rank
- 18254
- confusion score
Side-by-Side Comparison
| Feature | A1 | ah |
|---|---|---|
| Definition | Format d'une feuille de 594,6 mm sur 840,9. | Cri d’horreur ou d’effroi, en particulier lors d’une chute. |
Where the eye mixes A1 and ah
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between A1 and ah
These two trip readers on the page rather than in the ear: A1 is \a.œ̃\ while ah is \aː\. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - 1 in “A1” becomes h in “ah”, and the parts of speech differ too (noun vs onomatopoeia), which is usually the fastest check. Our composite confusion score for this pair is 18254, 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\. ah is at rank #396, tagged as anonomatopoeia, pronounced \aː\.
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 18254, this pair ranks #379,259 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of A1 vs ah
Shared letters: a. Private to "A1": -. Private to "ah": h.
"A1" · 1 letters · shape V · "ah" · 2 letters · shape VC
Frequently Asked Questions
Can "A1" and "ah" be used interchangeably?
Frequency check: "A1" vs "ah" - which ranks higher?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "A1" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ah" - compare definitions side by side with the headword page. Word entry
- This pair ranks #379,259 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "A1" and "ah" also get mixed up with nearby pairs, the highest-scored neighbour is "A1 vs aur". Nearby pair
Confusion rank #379,259 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.