Which to use
“sumo” is a noun and “sure” is an adjective - they look or sound alike but fill different roles in a sentence.
- #26,985
- “sumo” frequency rank
- #202
- “sure” frequency rank
- 27187
- confusion score
Side-by-Side Comparison
| Feature | sumo | sure |
|---|---|---|
| Definition | A stylised Japanese form of wrestling in which a wrestler loses if he is forced from the ring, or if any part of his body except the soles of his feet touches the ground. | Physically secure and certain, non-failing, reliable. |
Where the eye mixes sumo and sure
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses sumo with sure
These two trip readers on the page rather than in the ear: sumo is /ˈsuːməʊ/ while sure is /ʃɔː(ɹ)/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 27187, derived from the frequency rank of both members and their visual similarity.
sumo is recorded at frequency rank #26,985, classified as anoun, pronounced /ˈsuːməʊ/. sure is at rank #202, tagged as anadj, pronounced /ʃɔː(ɹ)/.
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 27187, this pair ranks #380,891 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of sumo vs sure
Shared letters: su. Private to "sumo": mo. Private to "sure": er.
"sumo" · 4 letters · shape CVCV · "sure" · 4 letters · shape CVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "sumo" for "sure" ever safe?
In ordinary English text, does "sumo" or "sure" show up more?
After this comparison
Eye-level mix-up between "sumo" and "sure" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "sumo" 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 #380,891 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "sumo" and "sure" also get mixed up with nearby pairs, the highest-scored neighbour is "sumo 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 #380,891 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.