acsvsatoWhich spelling fits?

Which to use

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

#49,775
“acs” frequency rank
#1,326
“ato” frequency rank
51101
confusion score

Side-by-Side Comparison

Feature acs ato
Definition olho (órgão da visão) processo de fazer algo; manifestação real e tangível

Where the eye mixes acs and ato

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
acs
3 ch
ato

Why the eye confuses acs with ato

A purely visual mix-up. acs ([ats]) and ato (/ˈato/ ou /ˈatu/_(plural:) /ˈatos/, /ˈatus/ ou /ˈatuʃ/) 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 51101, derived from the frequency rank of both members and their visual similarity.

acs is recorded at frequency rank #49,775, classified as anoun, pronounced [ats]. ato is at rank #1,326, tagged as anoun, pronounced /ˈato/ ou /ˈatu/_(plural:) /ˈatos/, /ˈatus/ ou /ˈatuʃ/.

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 51101, this pair ranks #13,901 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of acs vs ato

Shared letters: a. Private to "acs": cs. Private to "ato": ot.

"acs" · 3 letters · shape VCC  ·  "ato" · 3 letters · shape VCV

Frequently Asked Questions

Do "acs" and "ato" mean the same thing in a sentence?
No. They are said differently ([ats] versus /ˈato/ ou /ˈatu/_(plural:) /ˈatos/, /ˈatus/ ou /ˈatuʃ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "acs" vs "ato" - which ranks higher?
"ato" is the more common of the two: it sits at frequency rank #1,326 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.

After this comparison

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

  • Full dictionary entry for "acs" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ato" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #13,901 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "acs" and "ato" also get mixed up with nearby pairs, the highest-scored neighbour is "acs vs ASC". Nearby pair

Confusion rank #13,901 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