acasovsacsWhich spelling fits?

Quick tell: acaso is a adverb, acs is a noun, so they fill different roles in a sentence.

Which to use

“acaso” is an adverb and “acs” is a noun - they look or sound alike but fill different roles in a sentence.

#2,759
“acaso” frequency rank
#49,775
“acs” frequency rank
52534
confusion score

Side-by-Side Comparison

Feature acaso acs
Definition casualmente olho (órgão da visão)

Letter map: acaso vs acs

Shared letters muted; letters that set acaso and acs apart highlighted. Shared run: 3. acaso runs 5 letters (VCVCV) against acs's 3 (VCC) - the length gap alone is often enough to separate them once you know to check it.

5 ch
acaso
3 ch
acs

Role in the sentence - acaso and acs

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: acaso is anadverb and acsanoun. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 52534, derived from the frequency rank of both members and their visual similarity.

acaso is recorded at frequency rank #2,759, classified as anadv. acs is at rank #49,775, tagged as anoun, pronounced [ats].

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 52534, this pair ranks #12,698 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of acaso vs acs

Shared letters: acs. Private to "acaso": o. Private to "acs": -.

"acaso" · 5 letters · shape VCVCV  ·  "acs" · 3 letters · shape VCC

Known mistypes of this pair

  • acaso ← aacso · acaos · acasso · accaso · acsao · caaso

Frequently Asked Questions

Is swapping "acaso" for "acs" ever safe?
No - they are not even the same part of speech. "acaso" is an adverb and "acs" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "acaso" or "acs"?
"acaso" is the more common of the two: it sits at frequency rank #2,759 in our Portuguese list, against #49,775 for "acs". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "acaso" and "acs". Here's where to go from here.

  • Full dictionary entry for "acaso" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "acs" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #12,698 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "acaso" and "acs" also get mixed up with nearby pairs, the highest-scored neighbour is "acs vs ASC". 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 #12,698 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