Which to use
“diff” and “diffus” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #25,968
- “diff” frequency rank
- #29,724
- “diffus” frequency rank
- 55692
- confusion score
Side-by-Side Comparison
| Feature | diff | diffus |
|---|---|---|
| Definition | Difficile. | Qui se répand dans tous les sens. |
Where the eye mixes diff and diffus
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Visual trap between diff and diffus
A purely visual mix-up. diff (\dif\) and diffus (\di.fy\) 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) - “diff” sits inside “diffus”. Our composite confusion score for this pair is 55692, derived from the frequency rank of both members and their visual similarity.
diff is recorded at frequency rank #25,968, classified as anadj, pronounced \dif\. diffus is at rank #29,724, tagged as anadj, pronounced \di.fy\.
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 55692, this pair ranks #125,821 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of diff vs diffus
Shared letters: dfi. Private to "diff": -. Private to "diffus": su.
"diff" · 4 letters · shape CVCC · "diffus" · 6 letters · shape CVCCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "diff" for "diffus" ever safe?
Which is more common, "diff" or "diffus"?
After this comparison
Eye-level mix-up between "diff" and "diffus" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "diff" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "diffus" - compare definitions side by side with the headword page. Word entry
- This pair ranks #125,821 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "diff" and "diffus" also get mixed up with nearby pairs, the highest-scored neighbour is "diez vs diff". 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 #125,821 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.