feavsfioWhich spelling fits?

Quick tell: fea is a adjective, fio is a verb, so they fill different roles in a sentence.

Which to use

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

#5,731
“fea” frequency rank
#33,129
“fio” frequency rank
38860
confusion score

Side-by-Side Comparison

Feature fea fio
Definition Forma del femenino singular de feo. Tercera persona del singular (él, ella, ello; usted, 2.ª persona) del pretérito perfecto simple de indicativo de fiar.

Where the eye mixes fea and fio

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
fea
3 ch
fio

Look-alike desk: fea vs fio

These two trip readers on the page rather than in the ear: fea is [ˈfea] while fio is [ˈfjo]. 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 (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 38860, derived from the frequency rank of both members and their visual similarity.

fea is recorded at frequency rank #5,731, classified as anadj, pronounced [ˈfea]. fio is at rank #33,129, tagged as averb, pronounced [ˈfjo].

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 38860, this pair ranks #167,697 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fea vs fio

Shared letters: f. Private to "fea": ae. Private to "fio": io.

"fea" · 3 letters · shape CVV  ·  "fio" · 3 letters · shape CVV

Frequently Asked Questions

Can "fea" and "fio" be used interchangeably?
No - they are not even the same part of speech. "fea" is an adjective and "fio" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "fea" or "fio"?
"fea" is the more common of the two: it sits at frequency rank #5,731 in our Spanish list, against #33,129 for "fio". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "fea" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fio" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #167,697 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "fea" and "fio" also get mixed up with nearby pairs, the highest-scored neighbour is "filos vs fio". Nearby pair

Confusion rank #167,697 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