imersãovsimersoTell them apart

Quick tell: imersão is a noun, imerso is an adjective, so they fill different roles in a sentence.

Which to use

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

#24,359
“imersão” frequency rank
#33,023
“imerso” frequency rank
57382
confusion score

Side-by-Side Comparison

Feature imersão imerso
Definition ato ou efeito de imergir que (se) imergiu; mergulhado, afundado, submerso

Letter map: imersão vs imerso

Shared letters muted; letters that set imersão and imerso apart highlighted. Shared run: 6. imersão runs 7 letters (VCVCCVV) against imerso's 6 (VCVCCV) - the length gap alone is often enough to separate them once you know to check it.

7 ch
imersão
6 ch
imerso

Role in the sentence - imersão and imerso

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: imersão is anoun and imersoanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 57382, derived from the frequency rank of both members and their visual similarity.

imersão is recorded at frequency rank #24,359, classified as anoun, pronounced /i.mɨɾ.ˈsɐ̃w̃/. imerso is at rank #33,023, tagged as anadj.

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 57382, this pair ranks #9,384 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of imersão vs imerso

Shared letters: eimors. Private to "imersão": ã. Private to "imerso": -.

"imersão" · 7 letters · shape VCVCCVV  ·  "imerso" · 6 letters · shape VCVCCV

Known mistypes of this pair

  • imerso ← iemrso · imeros · imerrso · imersso · imesro · immerso · imreso · mierso

Frequently Asked Questions

Is swapping "imersão" for "imerso" ever safe?
No - they are not even the same part of speech. "imersão" is a noun and "imerso" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "imersão" or "imerso"?
"imersão" is the more common of the two: it sits at frequency rank #24,359 in our Portuguese list, against #33,023 for "imerso". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "imersão" and "imerso".

  • Full dictionary entry for "imersão" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "imerso" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #9,384 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "imersão" and "imerso" also get mixed up with nearby pairs, the highest-scored neighbour is "ileso vs imerso". 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 #9,384 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