Which to use
“ffa” and “foo” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #49,084
- “ffa” frequency rank
- #43,447
- “foo” frequency rank
- 92531
- confusion score
Side-by-Side Comparison
| Feature | ffa | foo |
|---|---|---|
| Definition | Fèves. | Variable métasyntaxique en programmation informatique. |
Where the eye mixes ffa and foo
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. ffa (CCV) and foo (CVV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Look-alike desk: ffa vs foo
A purely visual mix-up. ffa (\faː\) and foo (\fu\) 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 92531, derived from the frequency rank of both members and their visual similarity.
ffa is recorded at frequency rank #49,084, classified as anoun, pronounced \faː\. foo is at rank #43,447, tagged as anoun, pronounced \fu\.
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 92531, this pair ranks #2,925 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of ffa vs foo
Shared letters: f. Private to "ffa": a. Private to "foo": o.
"ffa" · 3 letters · shape CCV · "foo" · 3 letters · shape CVV
Frequently Asked Questions
Is swapping "ffa" for "foo" ever safe?
Which is more common, "ffa" or "foo"?
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 "ffa" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "foo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #2,925 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "ffa" and "foo" also get mixed up with nearby pairs, the highest-scored neighbour is "Fee vs ffa". Nearby pair
Confusion rank #2,925 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.