funciónvsfundióWhich spelling fits?

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

Which to use

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

#1,196
“función” frequency rank
#47,820
“fundió” frequency rank
49016
confusion score

Side-by-Side Comparison

Feature función fundió
Definition Propósito de algo, uso de algo. Tercera persona del singular (él, ella, ello; usted, 2.ª persona) del pretérito perfecto simple de indicativo de fundir.

Where the eye mixes función and fundió

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. función runs 7 letters (CVCCVVC) against fundió's 6 (CVCCVV) - the length gap alone is often enough to separate them once you know to check it.

7 ch
función
6 ch
fundió

Why the eye confuses función with fundió

These two trip readers on the page rather than in the ear: función is [fũnˈsjõn] while fundió is [fũn̪ˈd̪jo]. 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 49016, derived from the frequency rank of both members and their visual similarity.

función is recorded at frequency rank #1,196, classified as anoun, pronounced [fũnˈsjõn]. fundió is at rank #47,820, tagged as averb, pronounced [fũn̪ˈd̪jo].

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 49016, this pair ranks #111,244 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of función vs fundió

Shared letters: finuó. Private to "función": c. Private to "fundió": d.

"función" · 7 letters · shape CVCCVVC  ·  "fundió" · 6 letters · shape CVCCVV

Frequently Asked Questions

Can "función" and "fundió" be used interchangeably?
No - they are not even the same part of speech. "función" is a noun and "fundió" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "función" or "fundió"?
"función" is the more common of the two: it sits at frequency rank #1,196 in our Spanish list, against #47,820 for "fundió". 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 "función" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fundió" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #111,244 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "función" and "fundió" also get mixed up with nearby pairs, the highest-scored neighbour is "fundida vs fundió". Nearby pair

Confusion rank #111,244 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