Which to use
“fac” and “feu” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #3,608
- “fac” frequency rank
- #568
- “feu” frequency rank
- 4176
- confusion score
Side-by-Side Comparison
| Feature | fac | feu |
|---|---|---|
| Definition | Faculté ; université. | Phénomène calorifique et lumineux produit par la combustion d'une matière inflammable ; un des quatre éléments des Anciens. |
Where the eye mixes fac and feu
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between fac and feu
A purely visual mix-up. fac (\fak\) and feu (\fø\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 4176, derived from the frequency rank of both members and their visual similarity.
fac is recorded at frequency rank #3,608, classified as anoun, pronounced \fak\. feu is at rank #568, tagged as anoun, pronounced \fø\.
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 4176, this pair ranks #432,266 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of fac vs feu
Shared letters: f. Private to "fac": ac. Private to "feu": eu.
"fac" · 3 letters · shape CVC · "feu" · 3 letters · shape CVV
Frequently Asked Questions
Is swapping "fac" for "feu" ever safe?
Which is more common, "fac" or "feu"?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "fac" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "feu" - compare definitions side by side with the headword page. Word entry
- This pair ranks #432,266 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "fac" and "feu" also get mixed up with nearby pairs, the highest-scored neighbour is "fac vs Fee". Nearby pair
Confusion rank #432,266 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.