Which to use
“nines” is a noun and “ninety” is a num - they look or sound alike but fill different roles in a sentence.
- #35,430
- “nines” frequency rank
- #11,078
- “ninety” frequency rank
- 46508
- confusion score
Side-by-Side Comparison
| Feature | nines | ninety |
|---|---|---|
| Definition | A pair of nines. | The cardinal number occurring after eighty-nine and before ninety-one, represented in Roman numerals as XC and in Arabic numerals as 90. |
Letter map: nines vs ninety
Shared letters muted; letters that set nines and ninety apart highlighted. Shared run: 4. nines runs 5 letters (CVCVC) against ninety's 6 (CVCVCV) - the length gap alone is often enough to separate them once you know to check it.
Part-of-speech tell for nines / ninety
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: nines is anoun and ninetyanum. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 46508, derived from the frequency rank of both members and their visual similarity.
nines is recorded at frequency rank #35,430, classified as anoun. ninety is at rank #11,078, tagged as anum, pronounced /ˈnaɪn.ti/.
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 46508, this pair ranks #211,107 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of nines vs ninety
Shared letters: ein. Private to "nines": s. Private to "ninety": ty.
"nines" · 5 letters · shape CVCVC · "ninety" · 6 letters · shape CVCVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "nines" for "ninety" ever safe?
Frequency check: "nines" vs "ninety" - which ranks higher?
Useful next steps
Pair "nines" vs "ninety" is on the table, pick a follow-up below.
- Full dictionary entry for "nines" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ninety" - compare definitions side by side with the headword page. Word entry
- This pair ranks #211,107 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "nines" and "ninety" also get mixed up with nearby pairs, the highest-scored neighbour is "nines vs Noyes". 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 #211,107 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.