alienarvsalterarWhat's the difference?

Which to use

“alienar” and “alterar” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#38,979
“alienar” frequency rank
#5,593
“alterar” frequency rank
44572
confusion score

Side-by-Side Comparison

Feature alienar alterar
Definition (prep. a, para) transferir legitimamente para outrem a propriedade, o direito ou o domínio que tem sobre algo tornar diferente em algum aspecto como tamanho, peso, estilo, etc

Where the eye mixes alienar and alterar

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.

7 ch
alienar
7 ch
alterar

Visual trap between alienar and alterar

A purely visual mix-up. alienar (/ɐ.lje.ˈnaɾ/) and alterar (/aɫ.tɨ.ˈɾaɾ/) 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 44572, derived from the frequency rank of both members and their visual similarity.

alienar is recorded at frequency rank #38,979, classified as averb, pronounced /ɐ.lje.ˈnaɾ/. alterar is at rank #5,593, tagged as averb, pronounced /aɫ.tɨ.ˈɾaɾ/.

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 44572, this pair ranks #20,884 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of alienar vs alterar

Shared letters: aelr. Private to "alienar": in. Private to "alterar": t.

"alienar" · 7 letters · shape VCVVCVC  ·  "alterar" · 7 letters · shape VCCVCVC

Known mistypes of this pair

  • alienarailenar · aleinar · alieanr · alienarr · aliennar · alienra · alinear · allienar
  • alteraraletrar · allterar · altearr · alterarr · alterra · alterrar · altrear · altterar

Frequently Asked Questions

Can "alienar" and "alterar" be used interchangeably?
No. They are said differently (/ɐ.lje.ˈnaɾ/ versus /aɫ.tɨ.ˈɾaɾ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "alienar" vs "alterar" - which ranks higher?
"alterar" is the more common of the two: it sits at frequency rank #5,593 in our Portuguese list, against #38,979 for "alienar". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "alienar" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "alterar" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #20,884 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "alienar" and "alterar" also get mixed up with nearby pairs, the highest-scored neighbour is "afinar vs alienar". 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 #20,884 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list