Which to use
“undécima” and “undécimo” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #36,349
- “undécima” frequency rank
- #32,442
- “undécimo” frequency rank
- 68791
- confusion score
Side-by-Side Comparison
| Feature | undécima | undécimo |
|---|---|---|
| Definition | Forma del femenino de undécimo. | Que ocupa el puesto siguiente al décimo en una serie ordenada. Ordinal del once. |
Where the eye mixes undécima and undécimo
Muted = shared; highlighted = the visual trap. They share 7 letters in sequence. undécima and undécimo follow the identical consonant-vowel pattern (VCCVCVCV). Same shape at a glance is often the real trap, independent of shared letters.
Why the eye confuses undécima with undécimo
A purely visual mix-up. undécima ([ũn̪ˈd̪esima]) and undécimo ([ũn̪ˈd̪esimo]) 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 a single letter - a in “undécima” becomes o in “undécimo”. Our composite confusion score for this pair is 68791, derived from the frequency rank of both members and their visual similarity.
undécima is recorded at frequency rank #36,349, classified as anum, pronounced [ũn̪ˈd̪esima]. undécimo is at rank #32,442, tagged as anum, pronounced [ũn̪ˈd̪esimo].
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 68791, this pair ranks #33,604 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of undécima vs undécimo
Shared letters: cdimnué. Private to "undécima": a. Private to "undécimo": o.
"undécima" · 8 letters · shape VCCVCVCV · "undécimo" · 8 letters · shape VCCVCVCV
Frequently Asked Questions
Is swapping "undécima" for "undécimo" ever safe?
In ordinary Spanish text, does "undécima" or "undécimo" show up more?
Useful next steps
Eye-level mix-up between "undécima" and "undécimo" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "undécima" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "undécimo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #33,604 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
Confusion rank #33,604 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.