secavssecoWhich spelling fits?

Quick tell: seca is a noun, seco is an adjective, so they fill different roles in a sentence.

Which to use

“seca” is a noun and “seco” is an adjective - they look or sound alike but fill different roles in a sentence.

#2,805
“seca” frequency rank
#4,763
“seco” frequency rank
7568
confusion score

Side-by-Side Comparison

Feature seca seco
Definition período sem chuva sem água ou humidade; enxuto; árido

Where the eye mixes seca and seco

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

4 ch
seca
4 ch
seco

Look-alike desk: seca vs seco

These two trip readers on the page rather than in the ear: seca is /ˈsɛ.kɐ/ while seco is /ˈse.ku/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - a in “seca” becomes o in “seco”, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 7568, derived from the frequency rank of both members and their visual similarity.

seca is recorded at frequency rank #2,805, classified as anoun, pronounced /ˈsɛ.kɐ/. seco is at rank #4,763, tagged as anadj, pronounced /ˈse.ku/.

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 7568, this pair ranks #66,547 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of seca vs seco

Shared letters: ces. Private to "seca": a. Private to "seco": o.

"seca" · 4 letters · shape CVCV  ·  "seco" · 4 letters · shape CVCV

Known mistypes of this pair

  • secaesca · scea · seac · secca · sseca
  • secoesco · sceo · secco · seoc · sseco

Frequently Asked Questions

Is swapping "seca" for "seco" ever safe?
No - they are not even the same part of speech. "seca" is a noun and "seco" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "seca" or "seco"?
"seca" is the more common of the two: it sits at frequency rank #2,805 in our Portuguese list, against #4,763 for "seco". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "seca" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "seco" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #66,547 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "seca" and "seco" 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 #66,547 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list