focavsfoscoTell them apart

Which to use

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

#8,772
“foca” frequency rank
#48,427
“fosco” frequency rank
57199
confusion score

Side-by-Side Comparison

Feature foca fosco
Definition forma atenuada de, e o mesmo que foda não brunido, sem brilho, embaciado, não transparente

Where the eye mixes foca and fosco

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. foca runs 4 letters (CVCV) against fosco's 5 (CVCCV) - the length gap alone is often enough to separate them once you know to check it.

4 ch
foca
5 ch
fosco

Why the eye confuses foca with fosco

A purely visual mix-up. foca (/ˈfɔ.kɐ/) and fosco (/ˈfoʃ.ku/) 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 letter(s) in length. Our composite confusion score for this pair is 57199, derived from the frequency rank of both members and their visual similarity.

foca is recorded at frequency rank #8,772, classified as anadj, pronounced /ˈfɔ.kɐ/. fosco is at rank #48,427, tagged as anadj, pronounced /ˈfoʃ.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 57199, this pair ranks #9,469 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of foca vs fosco

Shared letters: cfo. Private to "foca": a. Private to "fosco": s.

"foca" · 4 letters · shape CVCV  ·  "fosco" · 5 letters · shape CVCCV

Known mistypes of this pair

  • foca ← fcoa · ffoca · foac · focca · ofca
  • fosco ← ffosco · focso · foscco · fosoc · fossco · fsoco · ofsco

Frequently Asked Questions

Is swapping "foca" for "fosco" ever safe?
No. They are said differently (/ˈfɔ.kɐ/ versus /ˈfoʃ.ku/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "foca" vs "fosco" - which ranks higher?
"foca" is the more common of the two: it sits at frequency rank #8,772 in our Portuguese list, against #48,427 for "fosco". 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 "foca" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fosco" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #9,469 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "foca" and "fosco" also get mixed up with nearby pairs, the highest-scored neighbour is "fisco vs fosco". 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 #9,469 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