Which to use
“SPF” is a noun and “sus” is an adverb - they look or sound alike but fill different roles in a sentence.
- #39,550
- “SPF” frequency rank
- #12,488
- “sus” frequency rank
- 52038
- confusion score
Side-by-Side Comparison
| Feature | SPF | sus |
|---|---|---|
| Definition | Norme de vérification du nom de domaine de l'expéditeur d'un courrier électronique, destinée à réduire le spam, via les DNS. | Dessus. |
Where the eye mixes SPF and sus
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between SPF and sus
These two trip readers on the page rather than in the ear: SPF is \ɛs.pe.ɛf\ while sus is \sys\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 52038, 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\. sus is at rank #12,488, tagged as anadv, pronounced \sys\.
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 52038, this pair ranks #150,622 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of SPF vs sus
Shared letters: s. Private to "SPF": fp. Private to "sus": u.
"SPF" · 3 letters · shape CCC · "sus" · 3 letters · shape CVC
Frequently Asked Questions
Can "SPF" and "sus" be used interchangeably?
In ordinary French text, does "SPF" or "sus" show up more?
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 "sus" - compare definitions side by side with the headword page. Word entry
- This pair ranks #150,622 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "SPF" and "sus" also get mixed up with nearby pairs, the highest-scored neighbour is "SPF vs suu". Nearby pair
Confusion rank #150,622 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.