virovsvírusWhat's the difference?

Which to use

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

#20,468
“viro” frequency rank
#2,346
“vírus” frequency rank
22814
confusion score

Side-by-Side Comparison

Feature viro vírus
Definition homem, indivíduo adulto do sexo masculino agente infeccioso microscópico, que causa várias doenças (AIDS, gripe, etc.) e provoca a produção de anticorpos

Where the eye mixes viro and vírus

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

4 ch
viro
5 ch
vírus

Look-alike desk: viro vs vírus

A purely visual mix-up. viro (/ˈvi.rɔ/) and vírus (/ˈvi.ɾuʃ/) 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 22814, derived from the frequency rank of both members and their visual similarity.

viro is recorded at frequency rank #20,468, classified as anoun, pronounced /ˈvi.rɔ/. vírus is at rank #2,346, tagged as anoun, pronounced /ˈvi.ɾuʃ/.

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 22814, this pair ranks #47,144 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of viro vs vírus

Shared letters: rv. Private to "viro": io. Private to "vírus": suí.

"viro" · 4 letters · shape CVCV  ·  "vírus" · 5 letters · shape CVCVC

Known mistypes of this pair

  • viroivro · vior · virro · vrio · vviro

Frequently Asked Questions

Do "viro" and "vírus" mean the same thing in a sentence?
No. They are said differently (/ˈvi.rɔ/ versus /ˈvi.ɾuʃ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "viro" or "vírus"?
"vírus" is the more common of the two: it sits at frequency rank #2,346 in our Portuguese list, against #20,468 for "viro". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "viro" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "vírus" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #47,144 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "viro" and "vírus" also get mixed up with nearby pairs, the highest-scored neighbour is "velo vs viro". 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 #47,144 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