operaciónvsoperaronTell them apart

Quick tell: operación is a noun, operaron is a verb, so they fill different roles in a sentence.

Which to use

“operación” is a noun and “operaron” is a verb - they look or sound alike but fill different roles in a sentence.

#1,355
“operación” frequency rank
#33,254
“operaron” frequency rank
34609
confusion score

Side-by-Side Comparison

Feature operación operaron
Definition Acción o efecto de operar. Tercera persona del plural (ellos, ellas; ustedes, 2.ª persona) del pretérito perfecto simple de indicativo de operar.

Where the eye mixes operación and operaron

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. operación runs 9 letters (VCVCVCVVC) against operaron's 8 (VCVCVCVC) - the length gap alone is often enough to separate them once you know to check it.

9 ch
operación
8 ch
operaron

Look-alike desk: operación vs operaron

These two trip readers on the page rather than in the ear: operación is [opeɾaˈsjõn] while operaron is [opeˈɾaɾõn]. 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 (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 34609, derived from the frequency rank of both members and their visual similarity.

operación is recorded at frequency rank #1,355, classified as anoun, pronounced [opeɾaˈsjõn]. operaron is at rank #33,254, tagged as averb, pronounced [opeˈɾaɾõn].

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 34609, this pair ranks #190,515 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of operación vs operaron

Shared letters: aenopr. Private to "operación": ció. Private to "operaron": -.

"operación" · 9 letters · shape VCVCVCVVC  ·  "operaron" · 8 letters · shape VCVCVCVC

Known mistypes of this pair

  • operaron ← oepraron · opearron · operaorn · operarno · operaronn · operarron · operraon · operraron

Frequently Asked Questions

Can "operación" and "operaron" be used interchangeably?
No - they are not even the same part of speech. "operación" is a noun and "operaron" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "operación" or "operaron"?
"operación" is the more common of the two: it sits at frequency rank #1,355 in our Spanish list, against #33,254 for "operaron". 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 "operación" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "operaron" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #190,515 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "operación" and "operaron" also get mixed up with nearby pairs, the highest-scored neighbour is "operaron vs operarse". 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 #190,515 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