Which to use
“fast” is an adverb and “foste” is a verb - they look or sound alike but fill different roles in a sentence.
- #8,052
- “fast” frequency rank
- #11,469
- “foste” frequency rank
- 19521
- confusion score
Side-by-Side Comparison
| Feature | fast | foste |
|---|---|---|
| Definition | quase | segunda pessoa do singular do pretérito perfeito do indicativo do verbo ser |
Where the spellings diverge
Shared letters are muted; the letters that actually set fast and foste apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
fast and foste form a confusable pair in the Portuguese index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by 1 letter(s) in length - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 19521, 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/. foste is at rank #11,469, tagged as averb, pronounced /ˈfos.ʧi/.
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 19521, this pair ranks #51,174 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Frequency comparison
Frequently Asked Questions
Can "fast" and "foste" be used interchangeably?
Remembering fast vs foste
The fastest way to pick the right one every time.
- Check the role first: if you need an adverb, it's “fast”; for a verb, it's “foste”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “fast” entry
- Browse more pairs most likely to be confused. Most confusable