Which to use
“sério” is an adjective and “serrão” is a noun - they look or sound alike but fill different roles in a sentence.
- #544
- “sério” frequency rank
- #34,915
- “serrão” frequency rank
- 35459
- confusion score
Side-by-Side Comparison
| Feature | sério | serrão |
|---|---|---|
| Definition | que demonstra profundo pensar | bodião da espécie Symphodus pirca |
Where the eye mixes sério and serrão
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. sério runs 5 letters (CVCVV) against serrão's 6 (CVCCVV) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between sério and serrão
These two trip readers on the page rather than in the ear: sério is /ˈsɛ.ɾju/ while serrão is /se.'raŋ/. 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 35459, derived from the frequency rank of both members and their visual similarity.
sério is recorded at frequency rank #544, classified as anadj, pronounced /ˈsɛ.ɾju/. serrão is at rank #34,915, tagged as anoun, pronounced /se.'raŋ/.
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 35459, this pair ranks #31,587 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of sério vs serrão
Shared letters: ors. Private to "sério": ié. Private to "serrão": eã.
"sério" · 5 letters · shape CVCVV · "serrão" · 6 letters · shape CVCCVV
Frequently Asked Questions
Do "sério" and "serrão" mean the same thing in a sentence?
Which is more common, "sério" or "serrão"?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "sério" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "serrão" - compare definitions side by side with the headword page. Word entry
- This pair ranks #31,587 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "sério" and "serrão" also get mixed up with nearby pairs, the highest-scored neighbour is "serias vs serrão". Nearby pair
Confusion rank #31,587 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.