Which to use
“alterar” and “alterna” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #10,258
- “alterar” frequency rank
- #17,331
- “alterna” frequency rank
- 27589
- confusion score
Side-by-Side Comparison
| Feature | alterar | alterna |
|---|---|---|
| Definition | Cambiar la forma, esencia, estructura o composición de algo. | Tercera persona del singular (él, ella, ello; usted, 2.ª persona) del presente de indicativo de alternar. |
Where the eye mixes alterar and alterna
Muted = shared; highlighted = the visual trap. They share 6 letters in sequence.
Look-alike desk: alterar vs alterna
A purely visual mix-up. alterar ([al̪t̪eˈɾaɾ]) and alterna ([al̪ˈt̪eɾna]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 27589, derived from the frequency rank of both members and their visual similarity.
alterar is recorded at frequency rank #10,258, classified as averb, pronounced [al̪t̪eˈɾaɾ]. alterna is at rank #17,331, tagged as averb, pronounced [al̪ˈt̪eɾna].
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 27589, this pair ranks #226,077 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of alterar vs alterna
Shared letters: aelrt. Private to "alterar": -. Private to "alterna": n.
"alterar" · 7 letters · shape VCCVCVC · "alterna" · 7 letters · shape VCCVCCV
Known mistypes of this pair
Frequently Asked Questions
Can "alterar" and "alterna" be used interchangeably?
Which is more common, "alterar" or "alterna"?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "alterar" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "alterna" - compare definitions side by side with the headword page. Word entry
- This pair ranks #226,077 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "alterar" and "alterna" also get mixed up with nearby pairs, the highest-scored neighbour is "Alberta vs alterna". 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 #226,077 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.