Which to use
“oito” is an adjective and “otto” is a num - they look or sound alike but fill different roles in a sentence.
- #1,099
- “oito” frequency rank
- #11,925
- “otto” frequency rank
- 13024
- confusion score
Side-by-Side Comparison
| Feature | oito | otto |
|---|---|---|
| Definition | número equivalente a sete mais um; cardinalidade de um conjunto que contenha oito elementos distintos, representado pelo símbolo 8 (algarismos arábicos) ou VIII (algarismos romanos) | oito (8, VIII) |
Where the eye mixes oito and otto
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. oito (VVCV) and otto (VCCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Visual trap between oito and otto
These two trip readers on the page rather than in the ear: oito is /ˈoj.tu/ while otto is /ˈɔtto/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - i in “oito” becomes t in “otto”, and the parts of speech differ too (adjective vs num), which is usually the fastest check. Our composite confusion score for this pair is 13024, derived from the frequency rank of both members and their visual similarity.
oito is recorded at frequency rank #1,099, classified as anadj, pronounced /ˈoj.tu/. otto is at rank #11,925, tagged as anum, pronounced /ˈɔtto/.
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 13024, this pair ranks #59,413 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of oito vs otto
Shared letters: ot. Private to "oito": i. Private to "otto": -.
"oito" · 4 letters · shape VVCV · "otto" · 4 letters · shape VCCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "oito" for "otto" ever safe?
Frequency check: "oito" vs "otto" - which ranks higher?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "oito" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "otto" - compare definitions side by side with the headword page. Word entry
- This pair ranks #59,413 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "oito" and "otto" also get mixed up with nearby pairs, the highest-scored neighbour is "omo vs otto". 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 #59,413 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.