Which to use
“rádio” is a noun and “rápido” is an adjective - they look or sound alike but fill different roles in a sentence.
- #857
- “rádio” frequency rank
- #811
- “rápido” frequency rank
- 1668
- confusion score
Side-by-Side Comparison
| Feature | rádio | rápido |
|---|---|---|
| Definition | elemento químico de símbolo Ra, possui o número atômico 88 e massa atômica relativa 226,025 u; é um metal alcalino terroso, branco prateado, altamente radioativo; ocorre em todos os minérios de urânio, e é produzido por decaimento radioativo; é utilizado na medicina para tratamento de câncer e, em laboratórios, como fonte de neutrons para análise de materiais | que anda depressa |
Letter map: rádio vs rápido
Shared letters muted; letters that set rádio and rápido apart highlighted. Shared run: 4. rádio runs 5 letters (CVCVV) against rápido's 6 (CVCVCV) - the length gap alone is often enough to separate them once you know to check it.
Role in the sentence - rádio and rápido
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: rádio is anoun and rápidoanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 1668, derived from the frequency rank of both members and their visual similarity.
rádio is recorded at frequency rank #857, classified as anoun. 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 1668, this pair ranks #73,853 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of rádio vs rápido
Shared letters: diorá. Private to "rádio": -. Private to "rápido": p.
"rádio" · 5 letters · shape CVCVV · "rápido" · 6 letters · shape CVCVCV
Frequently Asked Questions
Can "rádio" and "rápido" be used interchangeably?
In ordinary Portuguese text, does "rádio" or "rápido" show up more?
After this comparison
You've compared "rádio" and "rápido". Here's where to go from here.
- Full dictionary entry for "rádio" 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 #73,853 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "rádio" and "rápido" also get mixed up with nearby pairs, the highest-scored neighbour is "rabi vs rádio". Nearby pair
Confusion rank #73,853 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.