Which to use
“fast” is an adverb and “fava” is a noun - they look or sound alike but fill different roles in a sentence.
- #8,052
- “fast” frequency rank
- #46,328
- “fava” frequency rank
- 54380
- confusion score
Side-by-Side Comparison
| Feature | fast | fava |
|---|---|---|
| Definition | quase | fava, planta leguminosa cujas sementes são usadas na alimentação |
Where the eye mixes fast and fava
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. fast (CVCC) and fava (CVCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Look-alike desk: fast vs fava
These two trip readers on the page rather than in the ear: fast is /fast/ while fava is /ˈfa.bɐ/. 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 54380, 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/. fava is at rank #46,328, tagged as anoun, pronounced /ˈfa.bɐ/.
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 54380, this pair ranks #11,310 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of fast vs fava
Shared letters: af. Private to "fast": st. Private to "fava": v.
"fast" · 4 letters · shape CVCC · "fava" · 4 letters · shape CVCV
Known mistypes of this pair
Frequently Asked Questions
Can "fast" and "fava" be used interchangeably?
Which is more common, "fast" or "fava"?
Useful next steps
Eye-level mix-up between "fast" and "fava" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "fast" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "fava" - compare definitions side by side with the headword page. Word entry
- This pair ranks #11,310 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "fast" and "fava" 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 #11,310 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.