Which to use
“ato” and “auto” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #1,326
- “ato” frequency rank
- #1,421
- “auto” frequency rank
- 2747
- confusion score
Side-by-Side Comparison
| Feature | ato | auto |
|---|---|---|
| Definition | processo de fazer algo; manifestação real e tangível | solenidade; ação pública |
Where the eye mixes ato and auto
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Visual trap between ato and auto
A purely visual mix-up. ato (/ˈato/ ou /ˈatu/_(plural:) /ˈatos/, /ˈatus/ ou /ˈatuʃ/) and auto (/ˈaw.tu/) 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 2747, 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/. auto is at rank #1,421, tagged as anoun, pronounced /ˈaw.tu/.
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 2747, this pair ranks #72,527 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of ato vs auto
Shared letters: aot. Private to "ato": -. Private to "auto": u.
"ato" · 3 letters · shape VCV · "auto" · 4 letters · shape VVCV
Known mistypes of this pair
- auto ← atuo · auot · autto · uato
Frequently Asked Questions
Is swapping "ato" for "auto" ever safe?
In ordinary Portuguese text, does "ato" or "auto" show up more?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "ato" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "auto" - compare definitions side by side with the headword page. Word entry
- This pair ranks #72,527 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "ato" and "auto" also get mixed up with nearby pairs, the highest-scored neighbour is "acs vs ato". 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 #72,527 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.