fastvsfavoConfusable pair

Quick tell: fast is a adverb, favo is a noun, so they fill different roles in a sentence.

Which to use

“fast” is an adverb and “favo” is a noun - they look or sound alike but fill different roles in a sentence.

#8,052
“fast” frequency rank
#45,853
“favo” frequency rank
53905
confusion score

Side-by-Side Comparison

Feature fast favo
Definition quase alvéolo de cera hexagonal e o seu conteúdo, que as abelhas formam nas suas colmeias para armazém de mel, pólen, e cuidado dos ovos e larvas

Where the eye mixes fast and favo

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
fast
4 ch
favo

Visual trap between fast and favo

These two trip readers on the page rather than in the ear: fast is /fast/ while favo is /ˈfa.vu/. 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 (adverb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 53905, derived from the frequency rank of both members and their visual similarity.

fast is recorded at frequency rank #8,052, classified as anadv, pronounced /fast/. favo is at rank #45,853, tagged as anoun, pronounced /ˈfa.vu/.

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 53905, this pair ranks #11,695 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of fast vs favo

Shared letters: af. Private to "fast": st. Private to "favo": ov.

"fast" · 4 letters · shape CVCC  ·  "favo" · 4 letters · shape CVCV

Known mistypes of this pair

  • fastafst · fasst · fastt · fats · ffast · fsat
  • favoafvo · faov · favvo · ffavo · fvao

Frequently Asked Questions

Do "fast" and "favo" mean the same thing in a sentence?
No - they are not even the same part of speech. "fast" is an adverb and "favo" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "fast" or "favo" show up more?
"fast" is the more common of the two: it sits at frequency rank #8,052 in our Portuguese list, against #45,853 for "favo". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "fast" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "favo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #11,695 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "fast" and "favo" also get mixed up with nearby pairs, the highest-scored neighbour is "fava vs favo". 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 #11,695 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