alter vs altura, What's the Difference?

Which to use

“alter” is a pronoun and “altura” is a noun - they look or sound alike but fill different roles in a sentence.

#23,189
“alter” frequency rank: #905
“altura” frequency rank: 24094
confusion score

Side-by-Side Comparison

Feature	alter	altura
Definition	outro (dentre dois)	comprimento de um objeto medido da base até o topo

Letter map: alter vs altura

Shared letters muted; letters that set alter and altura apart highlighted. Shared run: 4. alter runs 5 letters (VCCVC) against altura's 6 (VCCVCV) - the length gap alone is often enough to separate them once you know to check it.

5 ch

alter

6 ch

altura

Role in the sentence - alter and altura

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: alter is apronoun and alturaanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 24094, derived from the frequency rank of both members and their visual similarity.

alter is recorded at frequency rank #23,189, classified as apron. altura is at rank #905, tagged as anoun, pronounced /aɫ.ˈtu.ɾɐ/.

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 24094, this pair ranks #45,611 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of alter vs altura

Shared letters: alrt. Private to "alter": e. Private to "altura": u.

"alter" · 5 letters · shape VCCVC · "altura" · 6 letters · shape VCCVCV

Known mistypes of this pair

alter ← aletr · allter · alterr · altre · altter · atler
altura ← alltura · altrua · alttura · altuar · alturra · alutra · atlura · latura

Frequently Asked Questions

Is swapping "alter" for "altura" ever safe?

No - they are not even the same part of speech. "alter" is a pronoun and "altura" a noun, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "alter" or "altura"?

"altura" is the more common of the two: it sits at frequency rank #905 in our Portuguese list, against #23,189 for "alter". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Done with this confusable. These links stay specific to "alter" and "altura".

Full dictionary entry for "alter" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "altura" - compare definitions side by side with the headword page. Word entry
This pair ranks #45,611 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"alter" and "altura" also get mixed up with nearby pairs, the highest-scored neighbour is "alles 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 #45,611 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.