selfvsSFWhich spelling fits?

Quick tell: self is a noun, SF is an adjective, so they fill different roles in a sentence.

Which to use

“self” is a noun and “SF” is an adjective - they look or sound alike but fill different roles in a sentence.

#11,301
“self” frequency rank
#15,503
“SF” frequency rank
26804
confusion score

Side-by-Side Comparison

Feature self SF
Definition Abréviation de « self-service ». De science-fiction, relatif à la science-fiction.

Letter map: self vs SF

Shared letters muted; letters that set self and SF apart highlighted. Shared run: 2.

4 ch
self
2 ch
SF

Part-of-speech tell for self / SF

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: self is anoun and SFanadjective. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 26804, derived from the frequency rank of both members and their visual similarity.

self is recorded at frequency rank #11,301, classified as anoun, pronounced \sɛlf\. SF is at rank #15,503, tagged as anadj.

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 26804, this pair ranks #332,767 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of self vs SF

Shared letters: fs. Private to "self": el. Private to "SF": -.

"self" · 4 letters · shape CVCC  ·  "SF" · 2 letters · shape CC

Known mistypes of this pair

  • selfeslf · sefl · selff · sellf · slef · sself

Frequently Asked Questions

Is swapping "self" for "SF" ever safe?
No - they are not even the same part of speech. "self" is a noun and "SF" an adjective, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "self" vs "SF" - which ranks higher?
"self" is the more common of the two: it sits at frequency rank #11,301 in our French list, against #15,503 for "SF". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've compared "self" and "SF". Here's where to go from here.

  • Full dictionary entry for "self" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "SF" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #332,767 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "self" and "SF" also get mixed up with nearby pairs, the highest-scored neighbour is "SF vs suu". 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 #332,767 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list