opacovsópticoWhich spelling fits?

Quick tell: opaco is a verb, óptico is an adjective, so they fill different roles in a sentence.

Which to use

“opaco” is a verb and “óptico” is an adjective - they look or sound alike but fill different roles in a sentence.

#31,905
“opaco” frequency rank
#20,863
“óptico” frequency rank
52768
confusion score

Side-by-Side Comparison

Feature opaco óptico
Definition Primera persona del singular (yo) del presente de indicativo de opacar. Relacionado o perteneciente a la óptica.

Where the eye mixes opaco and óptico

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

5 ch
opaco
6 ch
óptico

Why the eye confuses opaco with óptico

These two trip readers on the page rather than in the ear: opaco is [oˈpako] while óptico is [ˈopt̪iko]. 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 (verb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 52768, derived from the frequency rank of both members and their visual similarity.

opaco is recorded at frequency rank #31,905, classified as averb, pronounced [oˈpako]. óptico is at rank #20,863, tagged as anadj, pronounced [ˈopt̪iko].

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 52768, this pair ranks #91,118 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of opaco vs óptico

Shared letters: cop. Private to "opaco": a. Private to "óptico": itó.

"opaco" · 5 letters · shape VCVCV  ·  "óptico" · 6 letters · shape VCCVCV

Known mistypes of this pair

  • opacooapco · opacco · opaoc · opcao · oppaco · poaco

Frequently Asked Questions

Do "opaco" and "óptico" mean the same thing in a sentence?
No - they are not even the same part of speech. "opaco" is a verb and "óptico" an adjective, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "opaco" vs "óptico" - which ranks higher?
"óptico" is the more common of the two: it sits at frequency rank #20,863 in our Spanish list, against #31,905 for "opaco". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "opaco" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "óptico" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #91,118 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "opaco" and "óptico" also get mixed up with nearby pairs, the highest-scored neighbour is "opaco vs orco". 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 #91,118 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