S1
\ɛs.œ̃\
The verdict
“S1” is a moderately-common French word, ranked #23,361 in French word frequency and used as a noun.
- #23,361
- frequency rank, French
- 2
- letters
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Première vertèbre sacrale (de haut en bas).
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | S1 |
| Language | French |
| Part of speech | Noun |
| IPA | \ɛs.œ̃\ |
| Letters | 2 |
| Frequency rank | #23,361 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “S1” sits in French frequency
Spelling & Dictionary Insight
The French entry for S1 is 2 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as \ɛs.œ̃\. Corpus data places it at rank #23,361 in overall French word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "Première vertèbre sacrale (de haut en bas).".
Our edit-distance generator produced no likely misspellings for S1, which points to an orthography that plays by predictable French rules. It also participates in 20 confusable-pair relationships, "se", "si", "sa", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.
This headword's origin isn't recorded in our source data, so its spelling is best explained by sound-to-letter mapping rather than etymology. The correct French form is S1, spelled S-1.
Definition
- 1Première vertèbre sacrale (de haut en bas).
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 French corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “S1”
The practical upshot for anyone who landed here from a spell-check.
- The one correct French spelling is S-1 - every other letter order is a misspelling in standard orthography.
- Say it as \ɛs.œ̃\ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “se” - see the side-by-side comparison. S1 vs se
- Browse more French words and confusable pairs in the same reference. French words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.