Which to use
“fallu” and “fault” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #3,331
- “fallu” frequency rank
- #46,753
- “fault” frequency rank
- 50084
- confusion score
Side-by-Side Comparison
| Feature | fallu | fault |
|---|---|---|
| Definition | Participe passé de falloir. | Deuxième personne du pluriel de l’impératif présent de faulen. |
Where the eye mixes fallu and fault
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Why the eye confuses fallu with fault
A purely visual mix-up. fallu (\fa.ly\) and fault (\faʊ̯lt\) 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 50084, derived from the frequency rank of both members and their visual similarity.
fallu is recorded at frequency rank #3,331, classified as averb, pronounced \fa.ly\. fault is at rank #46,753, tagged as averb, pronounced \faʊ̯lt\.
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 50084, this pair ranks #165,444 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of fallu vs fault
Shared letters: aflu. Private to "fallu": -. Private to "fault": t.
"fallu" · 5 letters · shape CVCCV · "fault" · 5 letters · shape CVVCC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "fallu" for "fault" ever safe?
Which is more common, "fallu" or "fault"?
What to do next
Eye-level mix-up between "fallu" and "fault" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "fallu" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "fault" - compare definitions side by side with the headword page. Word entry
- This pair ranks #165,444 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "fallu" and "fault" also get mixed up with nearby pairs, the highest-scored neighbour is "fau vs fault". 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 #165,444 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.