SvsstWhat's the difference?

Quick tell: S is a character, st is a symbol, so they fill different roles in a sentence.

Which to use

“S” is a character and “st” is a symbol - they look or sound alike but fill different roles in a sentence.

#38
“S” frequency rank
#1,190
“st” frequency rank
1228
confusion score

Side-by-Side Comparison

Feature S st
Definition Dix-neuvième lettre et quinzième consonne de l’alphabet (majuscule). Symbole de la stère.

Letter map: S vs st

Shared letters muted; letters that set S and st apart highlighted. Shared run: 1.

1 ch
S
2 ch
st

Part-of-speech tell for S / st

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: S is acharacter and stasymbol. On the page they differ by 1 extra letter(s) - “S” sits inside “st”. Our composite confusion score for this pair is 1228, derived from the frequency rank of both members and their visual similarity.

S is recorded at frequency rank #38, classified as acharacter, pronounced \ɛs\. st is at rank #1,190, tagged as asymbol.

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 1228, this pair ranks #438,401 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of S vs st

Shared letters: s. Private to "S": -. Private to "st": t.

"S" · 1 letters · shape C  ·  "st" · 2 letters · shape CC

Frequently Asked Questions

Is swapping "S" for "st" ever safe?
No - they are not even the same part of speech. "S" is a character and "st" a symbol, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "S" vs "st" - which ranks higher?
"S" is the more common of the two: it sits at frequency rank #38 in our French list, against #1,190 for "st". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Pair "S" vs "st" is on the table, pick a follow-up below.

  • Full dictionary entry for "S" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "st" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #438,401 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "S" and "st" also get mixed up with nearby pairs, the highest-scored neighbour is "st vs suu". Nearby pair

Confusion rank #438,401 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