Which to use
“SPF” and “sud” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #39,550
- “SPF” frequency rank
- #439
- “sud” frequency rank
- 39989
- confusion score
Side-by-Side Comparison
| Feature | SPF | sud |
|---|---|---|
| Definition | Norme de vérification du nom de domaine de l'expéditeur d'un courrier électronique, destinée à réduire le spam, via les DNS. | Point cardinal opposé au nord ; direction du pôle de l’hémisphère austral et correspondant à l’azimut 180°. |
Where the eye mixes SPF and sud
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: SPF vs sud
A purely visual mix-up. SPF (\ɛs.pe.ɛf\) and sud (\syd\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 39989, derived from the frequency rank of both members and their visual similarity.
SPF is recorded at frequency rank #39,550, classified as anoun, pronounced \ɛs.pe.ɛf\. sud is at rank #439, tagged as anoun, pronounced \syd\.
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 39989, this pair ranks #243,849 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of SPF vs sud
Shared letters: s. Private to "SPF": fp. Private to "sud": du.
"SPF" · 3 letters · shape CCC · "sud" · 3 letters · shape CVC
Frequently Asked Questions
Can "SPF" and "sud" be used interchangeably?
Which is more common, "SPF" or "sud"?
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 "SPF" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sud" - compare definitions side by side with the headword page. Word entry
- This pair ranks #243,849 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "SPF" and "sud" also get mixed up with nearby pairs, the highest-scored neighbour is "SPF vs suu". Nearby pair
Confusion rank #243,849 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.