Which to use
“segredo” is a noun and “sereno” is an adjective - they look or sound alike but fill different roles in a sentence.
- #2,209
- “segredo” frequency rank
- #19,270
- “sereno” frequency rank
- 21479
- confusion score
Side-by-Side Comparison
| Feature | segredo | sereno |
|---|---|---|
| Definition | sigilo, mistério, assunto cujas informações estão (e/ou são mantidas) fora do conhecimento público | céu aberto, sem nuvens |
Where the eye mixes segredo and sereno
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. segredo runs 7 letters (CVCCVCV) against sereno's 6 (CVCVCV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses segredo with sereno
These two trip readers on the page rather than in the ear: segredo is \se.'gre.du\ while sereno is /sɨ.ˈɾe.nu/. 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 adjective), which is usually the fastest check. Our composite confusion score for this pair is 21479, derived from the frequency rank of both members and their visual similarity.
segredo is recorded at frequency rank #2,209, classified as anoun, pronounced \se.'gre.du\. sereno is at rank #19,270, tagged as anadj, pronounced /sɨ.ˈɾe.nu/.
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 21479, this pair ranks #48,768 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of segredo vs sereno
Shared letters: eors. Private to "segredo": dg. Private to "sereno": n.
"segredo" · 7 letters · shape CVCCVCV · "sereno" · 6 letters · shape CVCVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "segredo" for "sereno" ever safe?
Frequency check: "segredo" vs "sereno" - which ranks higher?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "segredo" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sereno" - compare definitions side by side with the headword page. Word entry
- This pair ranks #48,768 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "segredo" and "sereno" also get mixed up with nearby pairs, the highest-scored neighbour is "sereno vs sueño". 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 #48,768 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.