poovsproWhich spelling fits?

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

Which to use

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

#43,780
“poo” frequency rank
#1,421
“pro” frequency rank
45201
confusion score

Side-by-Side Comparison

Feature poo pro
Definition Polvo. Úsase para indicar el beneficiario de una acción o iniciativa.

Where the eye mixes poo and pro

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

3 ch
poo
3 ch
pro

Visual trap between poo and pro

These two trip readers on the page rather than in the ear: poo is [ˈpɔ.o] while pro is [ˈpɾo]. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - o in “poo” becomes r in “pro”, and the parts of speech differ too (noun vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 45201, derived from the frequency rank of both members and their visual similarity.

poo is recorded at frequency rank #43,780, classified as anoun, pronounced [ˈpɔ.o]. 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 45201, this pair ranks #132,805 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of poo vs pro

Shared letters: op. Private to "poo": -. Private to "pro": r.

"poo" · 3 letters · shape CVV  ·  "pro" · 3 letters · shape CCV

Frequently Asked Questions

Is swapping "poo" for "pro" ever safe?
No - they are not even the same part of speech. "poo" is a noun and "pro" a preposition, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "poo" vs "pro" - which ranks higher?
"pro" is the more common of the two: it sits at frequency rank #1,421 in our Spanish list, against #43,780 for "poo". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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 "poo" 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 #132,805 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "poo" and "pro" also get mixed up with nearby pairs, the highest-scored neighbour is "poo vs probo". Nearby pair

Confusion rank #132,805 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