Which to use
“fail” is a verb and “fau” is a noun - they look or sound alike but fill different roles in a sentence.
- #24,588
- “fail” frequency rank
- #38,799
- “fau” frequency rank
- 63387
- confusion score
Side-by-Side Comparison
| Feature | fail | fau |
|---|---|---|
| Definition | Échouer. | ou Hêtre, plus particulièrement le hêtre tortillard (Fagus sylvatica). |
Where the eye mixes fail and fau
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between fail and fau
These two trip readers on the page rather than in the ear: fail is \feɪl\ while fau is \fo\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 63387, derived from the frequency rank of both members and their visual similarity.
fail is recorded at frequency rank #24,588, classified as averb, pronounced \feɪl\. fau is at rank #38,799, tagged as anoun, pronounced \fo\.
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 63387, this pair ranks #82,209 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of fail vs fau
Shared letters: af. Private to "fail": il. Private to "fau": u.
"fail" · 4 letters · shape CVVC · "fau" · 3 letters · shape CVV
Known mistypes of this pair
- fail ← afil · faill · fali · ffail · fial
Frequently Asked Questions
Can "fail" and "fau" be used interchangeably?
Frequency check: "fail" vs "fau" - which ranks higher?
Useful next steps
Eye-level mix-up between "fail" and "fau" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "fail" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "fau" - compare definitions side by side with the headword page. Word entry
- This pair ranks #82,209 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "fail" and "fau" also get mixed up with nearby pairs, the highest-scored neighbour is "fau vs Fee". 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 #82,209 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.