Which to use
“sul” is a noun and “sure” is an adjective - they look or sound alike but fill different roles in a sentence.
- #20,840
- “sul” frequency rank
- #42,717
- “sure” frequency rank
- 63557
- confusion score
Side-by-Side Comparison
| Feature | sul | sure |
|---|---|---|
| Definition | Sur. | Seguro, convencido. |
Where the eye mixes sul and sure
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between sul and sure
These two trip readers on the page rather than in the ear: sul is /ˈsul/ while sure is /ʃʊə/ (fusión pour–poor). 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 adjective), which is usually the fastest check. Our composite confusion score for this pair is 63557, derived from the frequency rank of both members and their visual similarity.
sul is recorded at frequency rank #20,840, classified as anoun, pronounced /ˈsul/. sure is at rank #42,717, tagged as anadj, pronounced /ʃʊə/ (fusión pour–poor).
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 63557, this pair ranks #48,378 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of sul vs sure
Shared letters: su. Private to "sul": l. Private to "sure": er.
"sul" · 3 letters · shape CVC · "sure" · 4 letters · shape CVCV
Known mistypes of this pair
- sure ← srue · ssure · surre
Frequently Asked Questions
Is swapping "sul" for "sure" ever safe?
Frequency check: "sul" vs "sure" - 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 "sul" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sure" - compare definitions side by side with the headword page. Word entry
- This pair ranks #48,378 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "sul" and "sure" also get mixed up with nearby pairs, the highest-scored neighbour is "sari vs sure". 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 #48,378 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.