Which to use
“foo” is a noun and “form” is a verb - they look or sound alike but fill different roles in a sentence.
- #43,447
- “foo” frequency rank
- #26,370
- “form” frequency rank
- 69817
- confusion score
Side-by-Side Comparison
| Feature | foo | form |
|---|---|---|
| Definition | Variable métasyntaxique en programmation informatique. | Deuxième personne du singulier de l’impératif présent de formen. |
Where the eye mixes foo and form
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. foo runs 3 letters (CVV) against form's 4 (CVCC) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses foo with form
These two trip readers on the page rather than in the ear: foo is \fu\ while form is \fɔʁm\. 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 (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 69817, 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\. form is at rank #26,370, tagged as averb, pronounced \fɔʁm\.
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 69817, this pair ranks #53,706 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of foo vs form
Shared letters: fo. Private to "foo": -. Private to "form": mr.
"foo" · 3 letters · shape CVV · "form" · 4 letters · shape CVCC
Known mistypes of this pair
- form ← fform · fomr · formm · forrm · ofrm
Frequently Asked Questions
Do "foo" and "form" mean the same thing in a sentence?
Frequency check: "foo" vs "form" - which ranks higher?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "foo" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "form" - compare definitions side by side with the headword page. Word entry
- This pair ranks #53,706 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "foo" and "form" also get mixed up with nearby pairs, the highest-scored neighbour is "Fee vs foo". 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 #53,706 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.