secvssieTell them apart

Quick tell: sec is a adjective, sie is a pronoun, so they fill different roles in a sentence.

Which to use

“sec” is an adjective and “sie” is a pronoun - they look or sound alike but fill different roles in a sentence.

#19,268
“sec” frequency rank
#40,788
“sie” frequency rank
60056
confusion score

Side-by-Side Comparison

Feature sec sie
Definition seco ela, pronome pessoal feminino do caso nominativo da terceira pessoa do singular:

Where the eye mixes sec and sie

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

3 ch
sec
3 ch
sie

Look-alike desk: sec vs sie

These two trip readers on the page rather than in the ear: sec is \sɛk\ while sie is /zi:/ ouvir^(fonte ?) ouvir^(fonte ?). Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (adjective vs pronoun), which is usually the fastest check. Our composite confusion score for this pair is 60056, derived from the frequency rank of both members and their visual similarity.

sec is recorded at frequency rank #19,268, classified as anadj, pronounced \sɛk\. sie is at rank #40,788, tagged as apron, pronounced /zi:/ ouvir^(fonte ?) ouvir^(fonte ?).

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 60056, this pair ranks #7,866 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of sec vs sie

Shared letters: es. Private to "sec": c. Private to "sie": i.

"sec" · 3 letters · shape CVC  ·  "sie" · 3 letters · shape CVV

Frequently Asked Questions

Do "sec" and "sie" mean the same thing in a sentence?
No - they are not even the same part of speech. "sec" is an adjective and "sie" a pronoun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "sec" vs "sie" - which ranks higher?
"sec" is the more common of the two: it sits at frequency rank #19,268 in our Portuguese list, against #40,788 for "sie". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "sec" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sie" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #7,866 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "sec" and "sie" also get mixed up with nearby pairs, the highest-scored neighbour is "Sau vs sie". Nearby pair

Confusion rank #7,866 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