abertovsaterroTell them apart

Quick tell: aberto is a adjective, aterro is a noun, so they fill different roles in a sentence.

Which to use

“aberto” is an adjective and “aterro” is a noun - they look or sound alike but fill different roles in a sentence.

#1,300
“aberto” frequency rank
#15,022
“aterro” frequency rank
16322
confusion score

Side-by-Side Comparison

Feature aberto aterro
Definition não fechado ou barrado ação ou efeito de aterrar

Letter map: aberto vs aterro

Shared letters muted; letters that set aberto and aterro apart highlighted. Shared run: 4. aberto and aterro follow the identical consonant-vowel pattern (VCVCCV). Same shape at a glance is often the real trap, independent of shared letters.

6 ch
aberto
6 ch
aterro

Grammar separator: aberto vs aterro

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: aberto is anadjective and aterroanoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 16322, derived from the frequency rank of both members and their visual similarity.

aberto is recorded at frequency rank #1,300, classified as anadj. aterro is at rank #15,022, tagged as anoun, pronounced /ɐ.ˈte.Ru/.

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 16322, this pair ranks #55,237 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of aberto vs aterro

Shared letters: aeort. Private to "aberto": b. Private to "aterro": -.

"aberto" · 6 letters · shape VCVCCV  ·  "aterro" · 6 letters · shape VCVCCV

Known mistypes of this pair

  • aberto ← abberto · aberot · aberrto · abertto · abetro · abreto · aebrto · baerto
  • aterro ← aetrro · atero · ateror · atrero · atterro · taerro

Frequently Asked Questions

Do "aberto" and "aterro" mean the same thing in a sentence?
No - they are not even the same part of speech. "aberto" is an adjective and "aterro" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "aberto" or "aterro" show up more?
"aberto" is the more common of the two: it sits at frequency rank #1,300 in our Portuguese list, against #15,022 for "aterro". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

You've compared "aberto" and "aterro". Here's where to go from here.

  • Full dictionary entry for "aberto" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "aterro" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #55,237 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "aberto" and "aterro" also get mixed up with nearby pairs, the highest-scored neighbour is "alegro vs aterro". 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 #55,237 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