FCvsfuiTell them apart

Quick tell: FC is a abbrev, fui is a verb, so they fill different roles in a sentence.

Which to use

“FC” is an abbrev and “fui” is a verb - they look or sound alike but fill different roles in a sentence.

#2,777
“FC” frequency rank
#365
“fui” frequency rank
3142
confusion score

Side-by-Side Comparison

Feature FC fui
Definition Fußballclub (português: Futebol Clube, FC) primeira pessoa do singular do pretérito perfeito simples do indicativo do verbo ir:

Where the eye mixes FC and fui

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

2 ch
FC
3 ch
fui

Look-alike desk: FC vs fui

These two trip readers on the page rather than in the ear: FC is /ɛfˈt͡seː/ while fui is /ˈfuj/. 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 (abbrev vs verb), which is usually the fastest check. Our composite confusion score for this pair is 3142, derived from the frequency rank of both members and their visual similarity.

FC is recorded at frequency rank #2,777, classified as anabbrev, pronounced /ɛfˈt͡seː/. fui is at rank #365, tagged as averb, pronounced /ˈfuj/.

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 3142, this pair ranks #72,060 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of FC vs fui

Shared letters: f. Private to "FC": c. Private to "fui": iu.

"FC" · 2 letters · shape CC  ·  "fui" · 3 letters · shape CVV

Frequently Asked Questions

Can "FC" and "fui" be used interchangeably?
No - they are not even the same part of speech. "FC" is an abbrev and "fui" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "FC" or "fui" show up more?
"fui" is the more common of the two: it sits at frequency rank #365 in our Portuguese list, against #2,777 for "FC". 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 "FC" and "fui" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "FC" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fui" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #72,060 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "FC" and "fui" also get mixed up with nearby pairs, the highest-scored neighbour is "FC vs fon". Nearby pair

Confusion rank #72,060 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list