Which to use
“foy” is a noun and “Foyle” is a name - they look or sound alike but fill different roles in a sentence.
- #36,566
- “foy” frequency rank
- #46,469
- “Foyle” frequency rank
- 83035
- confusion score
Side-by-Side Comparison
| Feature | foy | Foyle |
|---|---|---|
| Definition | Faith, allegiance. | A river in Ireland which forms part of the border between the Republic of Ireland and Northern Ireland, before flowing through Derry (Londonderry) and into Lough Foyle and the Atlantic Ocean. |
Letter map: foy vs Foyle
Shared letters muted; letters that set foy and Foyle apart highlighted. Shared run: 3. foy runs 3 letters (CVV) against Foyle's 5 (CVVCV) - the length gap alone is often enough to separate them once you know to check it.
Role in the sentence - foy and Foyle
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: foy is anoun and Foyleaname. On the page they differ by 2 extra letter(s) - “foy” sits inside “Foyle”. Our composite confusion score for this pair is 83035, derived from the frequency rank of both members and their visual similarity.
foy is recorded at frequency rank #36,566, classified as anoun. Foyle is at rank #46,469, tagged as aname, pronounced /fɔɪl/.
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 83035, this pair ranks #14,576 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of foy vs Foyle
Shared letters: foy. Private to "foy": -. Private to "Foyle": el.
"foy" · 3 letters · shape CVV · "Foyle" · 5 letters · shape CVVCV
Known mistypes of this pair
- Foyle ← ffoyle · foyel · foylle · foyyle · fyole · ofyle
Frequently Asked Questions
Is swapping "foy" for "Foyle" ever safe?
Which is more common, "foy" or "Foyle"?
Useful next steps
You've compared "foy" and "Foyle". Here's where to go from here.
- Full dictionary entry for "foy" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "Foyle" - compare definitions side by side with the headword page. Word entry
- This pair ranks #14,576 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "foy" and "Foyle" also get mixed up with nearby pairs, the highest-scored neighbour is "foie vs Foyle". 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 #14,576 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.