Which to use
“siffler” and “souffler” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #21,167
- “siffler” frequency rank
- #11,667
- “souffler” frequency rank
- 32834
- confusion score
Side-by-Side Comparison
| Feature | siffler | souffler |
|---|---|---|
| Definition | Émettre un son aigu, soit avec les lèvres, soit en soufflant dans un sifflet, dans une clef forée, etc. | Pousser de l’air hors de la bouche. |
Where the eye mixes siffler and souffler
Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. siffler runs 7 letters (CVCCCVC) against souffler's 8 (CVVCCCVC) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between siffler and souffler
A purely visual mix-up. siffler (\si.fle\) and souffler (\su.fle\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 32834, derived from the frequency rank of both members and their visual similarity.
siffler is recorded at frequency rank #21,167, classified as averb, pronounced \si.fle\. souffler is at rank #11,667, tagged as averb, pronounced \su.fle\.
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 32834, this pair ranks #294,637 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of siffler vs souffler
Shared letters: eflrs. Private to "siffler": i. Private to "souffler": ou.
"siffler" · 7 letters · shape CVCCCVC · "souffler" · 8 letters · shape CVVCCCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "siffler" for "souffler" ever safe?
Which is more common, "siffler" or "souffler"?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "siffler" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "souffler" - compare definitions side by side with the headword page. Word entry
- This pair ranks #294,637 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "siffler" and "souffler" also get mixed up with nearby pairs, the highest-scored neighbour is "sifflent vs siffler". 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 #294,637 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.