primovsproboWhich spelling fits?

Quick tell: primo is a noun, probo is an adjective, so they fill different roles in a sentence.

Which to use

“primo” is a noun and “probo” is an adjective - they look or sound alike but fill different roles in a sentence.

#3,140
“primo” frequency rank
#49,876
“probo” frequency rank
53016
confusion score

Side-by-Side Comparison

Feature primo probo
Definition Hijo del tío de alguien. Que tiene probidad; honrado y honesto.

Where the eye mixes primo and probo

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. primo and probo follow the identical consonant-vowel pattern (CCVCV). Same shape at a glance is often the real trap, independent of shared letters.

5 ch
primo
5 ch
probo

Why the eye confuses primo with probo

These two trip readers on the page rather than in the ear: primo is [ˈpɾimo] while probo is [ˈpɾoβ̞o]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 53016, derived from the frequency rank of both members and their visual similarity.

primo is recorded at frequency rank #3,140, classified as anoun, pronounced [ˈpɾimo]. probo is at rank #49,876, tagged as anadj, pronounced [ˈpɾoβ̞o].

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 53016, this pair ranks #89,941 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of primo vs probo

Shared letters: opr. Private to "primo": im. Private to "probo": b.

"primo" · 5 letters · shape CCVCV  ·  "probo" · 5 letters · shape CCVCV

Known mistypes of this pair

  • primo ← pirmo · pprimo · primmo · priom · prmio · prrimo · rpimo
  • probo ← porbo · pprobo · prboo · probbo · proob · provo · prrobo · rpobo

Frequently Asked Questions

Can "primo" and "probo" be used interchangeably?
No - they are not even the same part of speech. "primo" is a noun and "probo" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "primo" or "probo" show up more?
"primo" is the more common of the two: it sits at frequency rank #3,140 in our Spanish list, against #49,876 for "probo". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

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

  • Full dictionary entry for "primo" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "probo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #89,941 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "primo" and "probo" also get mixed up with nearby pairs, the highest-scored neighbour is "Pombo vs probo". 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 #89,941 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