Which to use
“sour” is an adjective and “Sui” is a name - they look or sound alike but fill different roles in a sentence.
- #8,610
- “sour” frequency rank
- #28,040
- “Sui” frequency rank
- 36650
- confusion score
Side-by-Side Comparison
| Feature | sour | Sui |
|---|---|---|
| Definition | Tasting of acidity. | The Sui dynasty of China which ruled from 581 to 618. |
Where the eye mixes sour and Sui
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses sour with Sui
These two trip readers on the page rather than in the ear: sour is /ˈsaʊə/ while Sui is /sweɪ/. 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 (adjective vs name), which is usually the fastest check. Our composite confusion score for this pair is 36650, derived from the frequency rank of both members and their visual similarity.
sour is recorded at frequency rank #8,610, classified as anadj, pronounced /ˈsaʊə/. Sui is at rank #28,040, tagged as aname, pronounced /sweɪ/.
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 36650, this pair ranks #301,356 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of sour vs Sui
Shared letters: su. Private to "sour": or. Private to "Sui": i.
"sour" · 4 letters · shape CVVC · "Sui" · 3 letters · shape CVV
Known mistypes of this pair
- sour ← osur · soru · sourr · ssour · suor
Frequently Asked Questions
Is swapping "sour" for "Sui" ever safe?
In ordinary English text, does "sour" or "Sui" show up more?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "sour" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "Sui" - compare definitions side by side with the headword page. Word entry
- This pair ranks #301,356 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "sour" and "Sui" also get mixed up with nearby pairs, the highest-scored neighbour is "Sui vs sura". 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 #301,356 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.