certovscertosWhich spelling fits?

Which to use

“certo” and “certos” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#326
“certo” frequency rank
#2,359
“certos” frequency rank
2685
confusion score

Side-by-Side Comparison

Feature certo certos
Definition verdadeiro, evidente plural de certo

Where the eye mixes certo and certos

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.

5 ch
certo
6 ch
certos

Why the eye confuses certo with certos

A purely visual mix-up. certo (/ˈsɛɹ.tʊ/) and certos (/ˈsɛrtuʃ/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 extra letter(s) - “certo” sits inside “certos”. Our composite confusion score for this pair is 2685, derived from the frequency rank of both members and their visual similarity.

certo is recorded at frequency rank #326, classified as anadj, pronounced /ˈsɛɹ.tʊ/. certos is at rank #2,359, tagged as anadj, pronounced /ˈsɛrtuʃ/.

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 2685, this pair ranks #72,613 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of certo vs certos

Shared letters: ceort. Private to "certo": -. Private to "certos": s.

"certo" · 5 letters · shape CVCCV  ·  "certos" · 6 letters · shape CVCCVC

Known mistypes of this pair

  • certoccerto · cerot · cerrto · certto · cetro · creto · ecrto
  • certosccertos · cerots · cerrtos · certoss · certso · certtos · cetros · cretos

Frequently Asked Questions

Do "certo" and "certos" mean the same thing in a sentence?
No. They are said differently (/ˈsɛɹ.tʊ/ versus /ˈsɛrtuʃ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "certo" vs "certos" - which ranks higher?
"certo" is the more common of the two: it sits at frequency rank #326 in our Portuguese list, against #2,359 for "certos". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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 "certo" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "certos" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #72,613 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "certo" and "certos" also get mixed up with nearby pairs, the highest-scored neighbour is "cerda vs certo". 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 #72,613 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