Which to use
“rapidez” is a noun and “rápido” is an adjective - they look or sound alike but fill different roles in a sentence.
- #11,136
- “rapidez” frequency rank
- #811
- “rápido” frequency rank
- 11947
- confusion score
Side-by-Side Comparison
| Feature | rapidez | rápido |
|---|---|---|
| Definition | qualidade do que é rápido; velocidade; celeridade; prontidão: | que anda depressa |
Where the eye mixes rapidez and rápido
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. rapidez runs 7 letters (CVCVCVC) against rápido's 6 (CVCVCV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses rapidez with rápido
These two trip readers on the page rather than in the ear: rapidez is /Rɐ.pi.ˈdeʃ/ while rápido is /ˈRa.pi.du/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 11947, derived from the frequency rank of both members and their visual similarity.
rapidez is recorded at frequency rank #11,136, classified as anoun, pronounced /Rɐ.pi.ˈdeʃ/. rápido is at rank #811, tagged as anadj, pronounced /ˈRa.pi.du/.
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 11947, this pair ranks #60,780 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of rapidez vs rápido
Shared letters: dipr. Private to "rapidez": aez. Private to "rápido": oá.
"rapidez" · 7 letters · shape CVCVCVC · "rápido" · 6 letters · shape CVCVCV
Known mistypes of this pair
- rapidez ← arpidez · raipdez · rapdiez · rapiddez · rapidezz · rapidze · rapiedz · rappidez
Frequently Asked Questions
Can "rapidez" and "rápido" be used interchangeably?
Which is more common, "rapidez" or "rápido"?
Useful next steps
Eye-level mix-up between "rapidez" and "rápido" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "rapidez" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "rápido" - compare definitions side by side with the headword page. Word entry
- This pair ranks #60,780 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "rapidez" and "rápido" also get mixed up with nearby pairs, the highest-scored neighbour is "rapida vs rapidez". 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 #60,780 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.