Which to use
“A3” and “ad” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #20,334
- “A3” frequency rank
- #5,098
- “ad” frequency rank
- 25432
- confusion score
Side-by-Side Comparison
| Feature | A3 | ad |
|---|---|---|
| Definition | Format de papier mesurant 420 mm × 297 mm. | Pub, publicité ; réclame. |
Where the eye mixes A3 and ad
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: A3 vs ad
A purely visual mix-up. A3 (\ɑ.tʁwa\) and ad (\æd\) 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 - 3 in “A3” becomes d in “ad”. Our composite confusion score for this pair is 25432, derived from the frequency rank of both members and their visual similarity.
A3 is recorded at frequency rank #20,334, classified as anoun, pronounced \ɑ.tʁwa\. ad is at rank #5,098, tagged as anoun, pronounced \æd\.
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 25432, this pair ranks #340,911 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of A3 vs ad
Shared letters: a. Private to "A3": -. Private to "ad": d.
"A3" · 1 letters · shape V · "ad" · 2 letters · shape VC
Frequently Asked Questions
Do "A3" and "ad" mean the same thing in a sentence?
Frequency check: "A3" vs "ad" - which ranks higher?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "A3" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ad" - compare definitions side by side with the headword page. Word entry
- This pair ranks #340,911 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "A3" and "ad" also get mixed up with nearby pairs, the highest-scored neighbour is "A3 vs aur". Nearby pair
Confusion rank #340,911 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.