Which to use
“alter” is a verb and “altos” is an adjective - they look or sound alike but fill different roles in a sentence.
- #26,689
- “alter” frequency rank
- #1,713
- “altos” frequency rank
- 28402
- confusion score
Side-by-Side Comparison
| Feature | alter | altos |
|---|---|---|
| Definition | Alterar. | Forma del masculino plural de alto. |
Where the eye mixes alter and altos
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Visual trap between alter and altos
These two trip readers on the page rather than in the ear: alter is /ˈɔːltə(ɹ)/ while altos is [ˈal̪t̪os]. 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 (verb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 28402, derived from the frequency rank of both members and their visual similarity.
alter is recorded at frequency rank #26,689, classified as averb, pronounced /ˈɔːltə(ɹ)/. altos is at rank #1,713, tagged as anadj, pronounced [ˈal̪t̪os].
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 28402, this pair ranks #222,201 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of alter vs altos
Shared letters: alt. Private to "alter": er. Private to "altos": os.
"alter" · 5 letters · shape VCCVC · "altos" · 5 letters · shape VCCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "alter" for "altos" ever safe?
Which is more common, "alter" or "altos"?
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 "alter" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "altos" - compare definitions side by side with the headword page. Word entry
- This pair ranks #222,201 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "alter" and "altos" also get mixed up with nearby pairs, the highest-scored neighbour is "Aber vs alter". 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 #222,201 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.