A1 vs at, What's the Difference?

Which to use

“A1” and “at” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#17,858
“A1” frequency rank: #4,122
“at” frequency rank: 21980
confusion score

Side-by-Side Comparison

Feature	A1	at
Definition	Format d'une feuille de 594,6 mm sur 840,9.	Ancien nom de l’attier, qui a peut-être été importé à la Réunion par les Malbars et les Tamouls ; ce nom était particulièrement fréquent au Sénégal.

Where the eye mixes A1 and at

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

2 ch

Look-alike desk: A1 vs at

A purely visual mix-up. A1 (\a.œ̃\) and at (\at\) 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 t in “at”. Our composite confusion score for this pair is 21980, 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\. at is at rank #4,122, tagged as anoun, pronounced \at\.

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 21980, this pair ranks #360,419 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of A1 vs at

Shared letters: a. Private to "A1": -. Private to "at": t.

"A1" · 1 letters · shape V · "at" · 2 letters · shape VC

Frequently Asked Questions

Can "A1" and "at" be used interchangeably?

No. They are said differently (\a.œ̃\ versus \at\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

In ordinary French text, does "A1" or "at" show up more?

"at" is the more common of the two: it sits at frequency rank #4,122 in our French list, against #17,858 for "A1". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

Full dictionary entry for "A1" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "at" - compare definitions side by side with the headword page. Word entry
This pair ranks #360,419 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"A1" and "at" also get mixed up with nearby pairs, the highest-scored neighbour is "A1 vs aur". Nearby pair

Confusion rank #360,419 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.