Which to use
“falsa” and “fast” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #2,932
- “falsa” frequency rank
- #16,583
- “fast” frequency rank
- 19515
- confusion score
Side-by-Side Comparison
| Feature | falsa | fast |
|---|---|---|
| Definition | Forma del femenino de falso. | Rápido, veloz. |
Where the eye mixes falsa and fast
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Visual trap between falsa and fast
A purely visual mix-up. falsa ([ˈfalsa]) and fast (/fɑːst/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 19515, derived from the frequency rank of both members and their visual similarity.
falsa is recorded at frequency rank #2,932, classified as anadj, pronounced [ˈfalsa]. fast is at rank #16,583, tagged as anadj, pronounced /fɑːst/.
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 19515, this pair ranks #263,412 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of falsa vs fast
Shared letters: afs. Private to "falsa": l. Private to "fast": t.
"falsa" · 5 letters · shape CVCCV · "fast" · 4 letters · shape CVCC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "falsa" for "fast" ever safe?
Frequency check: "falsa" vs "fast" - which ranks higher?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "falsa" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "fast" - compare definitions side by side with the headword page. Word entry
- This pair ranks #263,412 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "falsa" and "fast" also get mixed up with nearby pairs, the highest-scored neighbour is "fast vs fuste". 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 #263,412 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.