Which to use
“ato” and “atum” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #1,326
- “ato” frequency rank
- #16,684
- “atum” frequency rank
- 18010
- confusion score
Side-by-Side Comparison
| Feature | ato | atum |
|---|---|---|
| Definition | processo de fazer algo; manifestação real e tangível | peixe da família dos Escombrídeos muito usado na alimentação quer em fresco, quer em conserva |
Where the eye mixes ato and atum
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: ato vs atum
A purely visual mix-up. ato (/ˈato/ ou /ˈatu/_(plural:) /ˈatos/, /ˈatus/ ou /ˈatuʃ/) and atum (/ɐ.ˈtũ/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 18010, derived from the frequency rank of both members and their visual similarity.
ato is recorded at frequency rank #1,326, classified as anoun, pronounced /ˈato/ ou /ˈatu/_(plural:) /ˈatos/, /ˈatus/ ou /ˈatuʃ/. atum is at rank #16,684, tagged as anoun, pronounced /ɐ.ˈtũ/.
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 18010, this pair ranks #53,087 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of ato vs atum
Shared letters: at. Private to "ato": o. Private to "atum": mu.
"ato" · 3 letters · shape VCV · "atum" · 4 letters · shape VCVC
Known mistypes of this pair
- atum ← atmu · attum · atumm · autm · taum
Frequently Asked Questions
Can "ato" and "atum" be used interchangeably?
In ordinary Portuguese text, does "ato" or "atum" show up more?
After this comparison
Eye-level mix-up between "ato" and "atum" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "ato" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "atum" - compare definitions side by side with the headword page. Word entry
- This pair ranks #53,087 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "ato" and "atum" also get mixed up with nearby pairs, the highest-scored neighbour is "atar vs atum". 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 #53,087 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.