águavsatuarTell them apart

Quick tell: água is a noun, atuar is a verb, so they fill different roles in a sentence.

Which to use

“água” is a noun and “atuar” is a verb - they look or sound alike but fill different roles in a sentence.

#254
“água” frequency rank
#4,207
“atuar” frequency rank
4461
confusion score

Side-by-Side Comparison

Feature água atuar
Definition substância (H₂O) líquida e incolor, insípida e inodora, essencial para a vida da maior parte dos organismos vivos e excelente solvente para muitas outras substâncias; óxido de hidrogênio exercer ação

Where the eye mixes água and atuar

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
água
5 ch
atuar

Why the eye confuses água with atuar

These two trip readers on the page rather than in the ear: água is /ˈa.gwɐ/ while atuar is /ɐ.ˈtwaɾ/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 4461, derived from the frequency rank of both members and their visual similarity.

água is recorded at frequency rank #254, classified as anoun, pronounced /ˈa.gwɐ/. atuar is at rank #4,207, tagged as averb, pronounced /ɐ.ˈtwaɾ/.

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 4461, this pair ranks #70,434 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of água vs atuar

Shared letters: au. Private to "água": . Private to "atuar": rt.

"água" · 4 letters · shape VCVV  ·  "atuar" · 5 letters · shape VCVVC

Known mistypes of this pair

  • atuarataur · attuar · atuarr · atura · autar · tauar

Frequently Asked Questions

Do "água" and "atuar" mean the same thing in a sentence?
No - they are not even the same part of speech. "água" is a noun and "atuar" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "água" or "atuar"?
"água" is the more common of the two: it sits at frequency rank #254 in our Portuguese list, against #4,207 for "atuar". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Eye-level mix-up between "água" and "atuar" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "água" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "atuar" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #70,434 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "água" and "atuar" also get mixed up with nearby pairs, the highest-scored neighbour is "atar vs atuar". 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 #70,434 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