Which to use
“forty” is a num and “foy” is a noun - they look or sound alike but fill different roles in a sentence.
- #5,130
- “forty” frequency rank
- #36,566
- “foy” frequency rank
- 41696
- confusion score
Side-by-Side Comparison
| Feature | forty | foy |
|---|---|---|
| Definition | The cardinal number occurring after thirty-nine and before forty-one, represented in Roman numerals as XL and in Arabic numerals as 40. | Faith, allegiance. |
Where the spellings diverge
Shared letters are muted; the letters that actually set forty and foy apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: forty is anum and foyanoun. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 41696, derived from the frequency rank of both members and their visual similarity.
forty is recorded at frequency rank #5,130, classified as anum, pronounced /ˈfɔːti/. foy is at rank #36,566, tagged as anoun.
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 41696, this pair ranks #255,931 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of forty vs foy
Shared letters: foy. Private to "forty": rt. Private to "foy": -.
"forty" · 5 letters · shape CVCCV · "foy" · 3 letters · shape CVV
Known mistypes of this pair
- forty ← fforty · forrty · fortty · fortyy · foryt · fotry · froty · ofrty
Frequency comparison
Frequently Asked Questions
Can "forty" and "foy" be used interchangeably?
Which is more common, "forty" or "foy"?
Remembering forty vs foy
The fastest way to pick the right one every time.
- Check the role first: if you need a num, it's “forty”; for a noun, it's “foy”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “forty” entry
- Browse more pairs most likely to be confused. Most confusable