Which to use
“acid” and “acides” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #43,247
- “acid” frequency rank
- #8,646
- “acides” frequency rank
- 51893
- confusion score
Side-by-Side Comparison
| Feature | acid | acides |
|---|---|---|
| Definition | Acide, aigre, sur, aigri, revêche, hargneux. | Pluriel de acide. |
Where the eye mixes acid and acides
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. acid runs 4 letters (VCVC) against acides's 6 (VCVCVC) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses acid with acides
A purely visual mix-up. acid (\a.ˈʦid\) and acides (\a.sid\) 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 2 extra letter(s) - “acid” sits inside “acides”. Our composite confusion score for this pair is 51893, derived from the frequency rank of both members and their visual similarity.
acid is recorded at frequency rank #43,247, classified as anadj, pronounced \a.ˈʦid\. acides is at rank #8,646, tagged as anadj, pronounced \a.sid\.
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 51893, this pair ranks #151,675 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of acid vs acides
Shared letters: acdi. Private to "acid": -. Private to "acides": es.
"acid" · 4 letters · shape VCVC · "acides" · 6 letters · shape VCVCVC
Known mistypes of this pair
Frequently Asked Questions
Do "acid" and "acides" mean the same thing in a sentence?
In ordinary French text, does "acid" or "acides" show up more?
Useful next steps
Eye-level mix-up between "acid" and "acides" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "acid" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "acides" - compare definitions side by side with the headword page. Word entry
- This pair ranks #151,675 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "acid" and "acides" also get mixed up with nearby pairs, the highest-scored neighbour is "ACF vs acid". 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 #151,675 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.