Which to use
“seco” is an adjective and “sem” is a preposition - they look or sound alike but fill different roles in a sentence.
- #4,763
- “seco” frequency rank
- #69
- “sem” frequency rank
- 4832
- confusion score
Side-by-Side Comparison
| Feature | seco | sem |
|---|---|---|
| Definition | sem água ou humidade; enxuto; árido | indicativa de carência ou ausência |
Where the eye mixes seco and sem
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between seco and sem
These two trip readers on the page rather than in the ear: seco is /ˈse.ku/ while sem is /sɐ̃j̃/. 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 preposition), which is usually the fastest check. Our composite confusion score for this pair is 4832, derived from the frequency rank of both members and their visual similarity.
seco is recorded at frequency rank #4,763, classified as anadj, pronounced /ˈse.ku/. sem is at rank #69, tagged as aprep, pronounced /sɐ̃j̃/.
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 4832, this pair ranks #69,941 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of seco vs sem
Shared letters: es. Private to "seco": co. Private to "sem": m.
"seco" · 4 letters · shape CVCV · "sem" · 3 letters · shape CVC
Known mistypes of this pair
- seco ← esco · sceo · secco · seoc · sseco
Frequently Asked Questions
Can "seco" and "sem" be used interchangeably?
Which is more common, "seco" or "sem"?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "seco" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sem" - compare definitions side by side with the headword page. Word entry
- This pair ranks #69,941 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "seco" and "sem" also get mixed up with nearby pairs, the highest-scored neighbour is "seco 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 #69,941 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.