si et seulement si
\si e sœl.mɑ̃ si\
The verdict
“si et seulement si” is uncommon French (outside the top frequency list), classed as a conjunction. The kind of spelling people second-guess.
- Unranked
- below top-frequency French
- 18
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Conjonction qui signifie que l’un est vrai si l’autre est vrai, et que l’un est faux si l’autre est faux.
| Property | Value |
|---|---|
| Headword | si et seulement si |
| Language | French |
| Part of speech | Conjunction |
| IPA | \si e sœl.mɑ̃ si\ |
| Letters | 18 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “si et seulement si” sits in French frequency
Rare enough to double-check
si et seulement si is uncommon French outside the top frequency list, classed as aconjunction, transcribed \si e sœl.mɑ̃ si\. Rarity is why readers land here mid-draft. Gloss: "Conjonction qui signifie que l’un est vrai si l’autre est vrai, et que l’un est faux si l’autre est faux.".
si et seulement si doesn't appear in our generated misspelling index, suggesting the orthography follows predictable French patterns. It is not paired with a close-neighbour confusable in our dataset, which typically means the spelling is too distinctive to be mistaken for another word.
No documented word history exists for this headword, so its spelling is easiest to reason about phoneme by phoneme, absent a documented history. The correct French form is si et seulement si, spelled S-I- -E-T- -S-E-U-L-E-M-E-N-T- -S-I.
Definition
- 1Conjonction qui signifie que l’un est vrai si l’autre est vrai, et que l’un est faux si l’autre est faux.
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “si et seulement si”
The practical upshot for anyone who landed here from a spell-check.
- The one correct French spelling is S-I- -E-T- -S-E-U-L-E-M-E-N-T- -S-I - every other letter order is a misspelling in standard orthography.
- Say it as \si e sœl.mɑ̃ si\ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- 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.