fesvsfoTell them apart

Quick tell: fes is a noun, fo is an intj, so they fill different roles in a sentence.

Which to use

“fes” is a noun and “fo” is an intj - they look or sound alike but fill different roles in a sentence.

#38,122
“fes” frequency rank
#20,044
“fo” frequency rank
58166
confusion score

Side-by-Side Comparison

Feature fes fo
Definition Forma del plural de fe. Expresión usada al percibir mal olor o sabor.

Where the eye mixes fes and fo

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

3 ch
fes
2 ch
fo

Visual trap between fes and fo

These two trip readers on the page rather than in the ear: fes is [ˈfes] while fo is [ˈfo]. 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 intj), which is usually the fastest check. Our composite confusion score for this pair is 58166, derived from the frequency rank of both members and their visual similarity.

fes is recorded at frequency rank #38,122, classified as anoun, pronounced [ˈfes]. fo is at rank #20,044, tagged as anintj, pronounced [ˈfo].

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 58166, this pair ranks #67,500 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of fes vs fo

Shared letters: f. Private to "fes": es. Private to "fo": o.

"fes" · 3 letters · shape CVC  ·  "fo" · 2 letters · shape CV

Frequently Asked Questions

Do "fes" and "fo" mean the same thing in a sentence?
No - they are not even the same part of speech. "fes" is a noun and "fo" an intj, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "fes" or "fo" show up more?
"fo" is the more common of the two: it sits at frequency rank #20,044 in our Spanish list, against #38,122 for "fes". 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 "fes" and "fo" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "fes" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #67,500 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "fes" and "fo" also get mixed up with nearby pairs, the highest-scored neighbour is "faces vs fes". Nearby pair

Confusion rank #67,500 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