perovspotroTell them apart

Quick tell: pero is a conjunction, potro is a noun, so they fill different roles in a sentence.

Which to use

“pero” is a conjunction and “potro” is a noun - they look or sound alike but fill different roles in a sentence.

#17,884
“pero” frequency rank
#33,548
“potro” frequency rank
51432
confusion score

Side-by-Side Comparison

Feature pero potro
Definition mas, porém denominação dada ao cavalo do nascimento até a troca dos dentes de leite por volta do quarto ano de idade; animal novo

Where the eye mixes pero and potro

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

4 ch
pero
5 ch
potro

Look-alike desk: pero vs potro

These two trip readers on the page rather than in the ear: pero is /ˈpe.ɾu/ while potro is /ˈpo.tɾu/. 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 (conjunction vs noun), which is usually the fastest check. Our composite confusion score for this pair is 51432, derived from the frequency rank of both members and their visual similarity.

pero is recorded at frequency rank #17,884, classified as aconj, pronounced /ˈpe.ɾu/. potro is at rank #33,548, tagged as anoun, pronounced /ˈpo.tɾu/.

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 51432, this pair ranks #13,610 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of pero vs potro

Shared letters: opr. Private to "pero": e. Private to "potro": t.

"pero" · 4 letters · shape CVCV  ·  "potro" · 5 letters · shape CVCCV

Known mistypes of this pair

  • pero ← epro · peor · perro · ppero · preo
  • potro ← optro · potor · potrro · pottro · ppotro · ptoro

Frequently Asked Questions

Can "pero" and "potro" be used interchangeably?
No - they are not even the same part of speech. "pero" is a conjunction and "potro" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "pero" or "potro" show up more?
"pero" is the more common of the two: it sits at frequency rank #17,884 in our Portuguese list, against #33,548 for "potro". 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 "pero" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "potro" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #13,610 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "pero" and "potro" also get mixed up with nearby pairs, the highest-scored neighbour is "pomo vs potro". 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 #13,610 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