Which to use
“alterar” and “aterrar” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #5,593
- “alterar” frequency rank
- #32,863
- “aterrar” frequency rank
- 38456
- confusion score
Side-by-Side Comparison
| Feature | alterar | aterrar |
|---|---|---|
| Definition | tornar diferente em algum aspecto como tamanho, peso, estilo, etc | retornar à terra; pousar (o avião); aterrissar |
Where the spellings diverge
Shared letters are muted; the letters that actually set alterar and aterrar apart are highlighted. They share 6 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
A purely visual mix-up. alterar (/aɫ.tɨ.ˈɾaɾ/) and aterrar (/a.teˈʁa(ʁ)/) 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 3 positions. Our composite confusion score for this pair is 38456, derived from the frequency rank of both members and their visual similarity.
alterar is recorded at frequency rank #5,593, classified as averb, pronounced /aɫ.tɨ.ˈɾaɾ/. aterrar is at rank #32,863, tagged as averb, pronounced /a.teˈʁa(ʁ)/.
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 38456, this pair ranks #28,000 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of alterar vs aterrar
Shared letters: aert. Private to "alterar": l. Private to "aterrar": -.
"alterar" · 7 letters · shape VCCVCVC · "aterrar" · 7 letters · shape VCVCCVC
Known mistypes of this pair
Frequency comparison
Frequently Asked Questions
Can "alterar" and "aterrar" be used interchangeably?
Which is more common, "alterar" or "aterrar"?
Remembering alterar vs aterrar
The fastest way to pick the right one every time.
- Read both glosses above and match the meaning you intend, only context separates this pair.
- See each word in full, definition, IPA, etymology and its other confusables. Full “alterar” entry
- Browse more pairs most likely to be confused. Most confusable