Which to use
“ceo” and “cio” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #8,861
- “ceo” frequency rank
- #22,564
- “cio” frequency rank
- 31425
- confusion score
Side-by-Side Comparison
| Feature | ceo | cio |
|---|---|---|
| Definition | nevoeiro; neblina | período de maior apetite sexual e fertilidade de certos animais |
Where the eye mixes ceo and cio
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between ceo and cio
A purely visual mix-up. ceo (/coː/) and cio (/ˈsi.u/) 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 a single letter - e in “ceo” becomes i in “cio”. Our composite confusion score for this pair is 31425, derived from the frequency rank of both members and their visual similarity.
ceo is recorded at frequency rank #8,861, classified as anoun, pronounced /coː/. cio is at rank #22,564, tagged as anoun, pronounced /ˈsi.u/.
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 31425, this pair ranks #36,661 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of ceo vs cio
Shared letters: co. Private to "ceo": e. Private to "cio": i.
"ceo" · 3 letters · shape CVV · "cio" · 3 letters · shape CVV
Frequently Asked Questions
Do "ceo" and "cio" mean the same thing in a sentence?
In ordinary Portuguese text, does "ceo" or "cio" show up more?
Useful next steps
Eye-level mix-up between "ceo" and "cio" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "ceo" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "cio" - compare definitions side by side with the headword page. Word entry
- This pair ranks #36,661 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "ceo" and "cio" also get mixed up with nearby pairs, the highest-scored neighbour is "ciao vs cio". Nearby pair
Confusion rank #36,661 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.