fuivsfullTell them apart

Quick tell: fui is a verb, full is an adverb, so they fill different roles in a sentence.

Which to use

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

#365
“fui” frequency rank
#6,066
“full” frequency rank
6431
confusion score

Side-by-Side Comparison

Feature fui full
Definition primeira pessoa do singular do pretérito perfeito simples do indicativo do verbo ir: ver completamente

Letter map: fui vs full

Shared letters muted; letters that set fui and full apart highlighted. Shared run: 2.

3 ch
fui
4 ch
full

Grammar separator: fui vs full

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: fui is averb and fullanadverb. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 6431, derived from the frequency rank of both members and their visual similarity.

fui is recorded at frequency rank #365, classified as averb, pronounced /ˈfuj/. full is at rank #6,066, tagged as anadv.

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 6431, this pair ranks #68,006 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of fui vs full

Shared letters: fu. Private to "fui": i. Private to "full": l.

"fui" · 3 letters · shape CVV  ·  "full" · 4 letters · shape CVCC

Known mistypes of this pair

  • fullffull · flul · ful · ufll

Frequently Asked Questions

Is swapping "fui" for "full" ever safe?
No - they are not even the same part of speech. "fui" is a verb and "full" an adverb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "fui" or "full"?
"fui" is the more common of the two: it sits at frequency rank #365 in our Portuguese list, against #6,066 for "full". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Done with this confusable. These links stay specific to "fui" and "full".

  • Full dictionary entry for "fui" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "full" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #68,006 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "fui" and "full" also get mixed up with nearby pairs, the highest-scored neighbour is "fel vs full". 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 #68,006 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