perosvsproWhich spelling fits?

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

Which to use

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

#31,487
“peros” frequency rank
#1,421
“pro” frequency rank
32908
confusion score

Side-by-Side Comparison

Feature peros pro
Definition Forma del plural de pero. Úsase para indicar el beneficiario de una acción o iniciativa.

Where the eye mixes peros and pro

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
peros
3 ch
pro

Visual trap between peros and pro

These two trip readers on the page rather than in the ear: peros is [ˈpeɾos] while pro is [ˈpɾo]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (noun vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 32908, derived from the frequency rank of both members and their visual similarity.

peros is recorded at frequency rank #31,487, classified as anoun, pronounced [ˈpeɾos]. pro is at rank #1,421, tagged as aprep, pronounced [ˈpɾo].

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 32908, this pair ranks #199,574 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of peros vs pro

Shared letters: opr. Private to "peros": es. Private to "pro": -.

"peros" · 5 letters · shape CVCVC  ·  "pro" · 3 letters · shape CCV

Known mistypes of this pair

  • perosepros · peors · peross · pperos · preos

Frequently Asked Questions

Do "peros" and "pro" mean the same thing in a sentence?
No - they are not even the same part of speech. "peros" is a noun and "pro" a preposition, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "peros" or "pro"?
"pro" is the more common of the two: it sits at frequency rank #1,421 in our Spanish list, against #31,487 for "peros". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

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

  • Full dictionary entry for "peros" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "pro" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #199,574 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "peros" and "pro" also get mixed up with nearby pairs, the highest-scored neighbour is "Perm vs peros". 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 #199,574 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