Which to use
“foo” and “fox” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #43,447
- “foo” frequency rank
- #7,832
- “fox” frequency rank
- 51279
- confusion score
Side-by-Side Comparison
| Feature | foo | fox |
|---|---|---|
| Definition | Variable métasyntaxique en programmation informatique. | Race de chien, abréviation de fox-terrier. |
Where the eye mixes foo and fox
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses foo with fox
A purely visual mix-up. foo (\fu\) and fox (\fɔks\) 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 a single letter - o in “foo” becomes x in “fox”. Our composite confusion score for this pair is 51279, derived from the frequency rank of both members and their visual similarity.
foo is recorded at frequency rank #43,447, classified as anoun, pronounced \fu\. fox is at rank #7,832, tagged as anoun, pronounced \fɔks\.
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 51279, this pair ranks #156,227 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of foo vs fox
Shared letters: fo. Private to "foo": -. Private to "fox": x.
"foo" · 3 letters · shape CVV · "fox" · 3 letters · shape CVC
Frequently Asked Questions
Do "foo" and "fox" mean the same thing in a sentence?
Frequency check: "foo" vs "fox" - which ranks higher?
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 "foo" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "fox" - compare definitions side by side with the headword page. Word entry
- This pair ranks #156,227 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "foo" and "fox" also get mixed up with nearby pairs, the highest-scored neighbour is "Fee vs foo". Nearby pair
Confusion rank #156,227 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.