sans faille
\sɑ̃ fay\
The verdict
“sans faille” is outside the top-ranked French vocabulary, used as an adjective - the kind of word writers most often double-check.
- Unranked
- below top-frequency French
- 11
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Sans défaut, sans faiblesse.
| Property | Value |
|---|---|
| Headword | sans faille |
| Language | French |
| Part of speech | Adjective |
| IPA | \sɑ̃ fay\ |
| Letters | 11 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “sans faille” sits in French frequency
Spelling & Dictionary Insight
The French entry for sans faille is 11 letters long, classified as an adjective, and transcribed in the International Phonetic Alphabet as \sɑ̃ fay\. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "Sans défaut, sans faiblesse.".
sans faille doesn't appear in our generated misspelling index, a straightforward case of a spelling with little room for common typos. This entry stands alone in our confusable dataset, which typically means the spelling is too distinctive to be mistaken for another word.
Our source data has no etymology on file for this entry, so its spelling is best explained by sound-to-letter mapping rather than etymology. The correct French form is sans faille, spelled S-A-N-S- -F-A-I-L-L-E.
Definition
- 1Sans défaut, sans faiblesse.
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 “sans faille”
The practical upshot for anyone who landed here from a spell-check.
- The one correct French spelling is S-A-N-S- -F-A-I-L-L-E - every other letter order is a misspelling in standard orthography.
- Say it as \sɑ̃ fay\ (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.