Which to use
“úlcera” and “ultra” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #30,722
- “úlcera” frequency rank
- #7,081
- “ultra” frequency rank
- 37803
- confusion score
Side-by-Side Comparison
| Feature | úlcera | ultra |
|---|---|---|
| Definition | Lesión en la piel o en las mucosas, poco propensa a cicatrizar, que adopta forma de cráter y se acompaña de inflamación y a veces infección. | Miembro de los ultras de un equipo. |
Where the eye mixes úlcera and ultra
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. úlcera runs 6 letters (VCCVCV) against ultra's 5 (VCCCV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses úlcera with ultra
A purely visual mix-up. úlcera ([ˈulseɾa]) and ultra ([ˈul̪t̪ɾa]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 37803, derived from the frequency rank of both members and their visual similarity.
úlcera is recorded at frequency rank #30,722, classified as anoun, pronounced [ˈulseɾa]. ultra is at rank #7,081, tagged as anoun, pronounced [ˈul̪t̪ɾa].
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 37803, this pair ranks #173,386 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of úlcera vs ultra
Shared letters: alr. Private to "úlcera": ceú. Private to "ultra": tu.
"úlcera" · 6 letters · shape VCCVCV · "ultra" · 5 letters · shape VCCCV
Known mistypes of this pair
- ultra ← lutra · ulltra · ulrta · ultar · ultrra · ulttra · utlra
Frequently Asked Questions
Can "úlcera" and "ultra" be used interchangeably?
In ordinary Spanish text, does "úlcera" or "ultra" show up more?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "úlcera" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ultra" - compare definitions side by side with the headword page. Word entry
- This pair ranks #173,386 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "úlcera" and "ultra" also get mixed up with nearby pairs, the highest-scored neighbour is "úlcera vs uniera". 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 #173,386 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.