versusvsvirusWhich spelling fits?

Quick tell: versus is a preposition, virus is a noun, so they fill different roles in a sentence.

Which to use

“versus” is a preposition and “virus” is a noun - they look or sound alike but fill different roles in a sentence.

#14,480
“versus” frequency rank
#2,961
“virus” frequency rank
17441
confusion score

Side-by-Side Comparison

Feature versus virus
Definition Contra (indica oposición o enfrentamiento). Agente infeccioso compuesto de ácido nucleico rodeado por proteínas, y que sólo se reproduce dentro de sus célula hospedadoras, usando los orgánulos de éstas.

Where the eye mixes versus and virus

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

6 ch
versus
5 ch
virus

Why the eye confuses versus with virus

These two trip readers on the page rather than in the ear: versus is [ˈbeɾsus] while virus is [ˈbiɾus]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (preposition vs noun), which is usually the fastest check. Our composite confusion score for this pair is 17441, derived from the frequency rank of both members and their visual similarity.

versus is recorded at frequency rank #14,480, classified as aprep, pronounced [ˈbeɾsus]. virus is at rank #2,961, tagged as anoun, pronounced [ˈbiɾus].

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 17441, this pair ranks #272,088 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of versus vs virus

Shared letters: rsuv. Private to "versus": e. Private to "virus": i.

"versus" · 6 letters · shape CVCCVC  ·  "virus" · 5 letters · shape CVCVC

Known mistypes of this pair

  • versusbersus · evrsus · verrsus · verssu · verssus · versuss · veruss · vesrus
  • virusbirus · ivrus · virrus · virsu · viruss · viurs · vrius · vvirus

Frequently Asked Questions

Can "versus" and "virus" be used interchangeably?
No - they are not even the same part of speech. "versus" is a preposition and "virus" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "versus" or "virus" show up more?
"virus" is the more common of the two: it sits at frequency rank #2,961 in our Spanish list, against #14,480 for "versus". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "versus" and "virus" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "versus" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "virus" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #272,088 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "versus" and "virus" also get mixed up with nearby pairs, the highest-scored neighbour is "virus vs visos". 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 #272,088 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list