Which to use
“rápido” is an adjective and “ratio” is a noun - they look or sound alike but fill different roles in a sentence.
- #811
- “rápido” frequency rank
- #46,527
- “ratio” frequency rank
- 47338
- confusion score
Side-by-Side Comparison
| Feature | rápido | ratio |
|---|---|---|
| Definition | que anda depressa | quociente, proporção, razão |
Where the eye mixes rápido and ratio
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. rápido runs 6 letters (CVCVCV) against ratio's 5 (CVCVV) - the length gap alone is often enough to separate them once you know to check it.
Look-alike desk: rápido vs ratio
These two trip readers on the page rather than in the ear: rápido is /ˈRa.pi.du/ while ratio is /ɻeɪ.ʃi.oʊ/. 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 47338, derived from the frequency rank of both members and their visual similarity.
rápido is recorded at frequency rank #811, classified as anadj, pronounced /ˈRa.pi.du/. ratio is at rank #46,527, tagged as anoun, pronounced /ɻeɪ.ʃi.oʊ/.
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 47338, this pair ranks #17,922 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of rápido vs ratio
Shared letters: ior. Private to "rápido": dpá. Private to "ratio": at.
"rápido" · 6 letters · shape CVCVCV · "ratio" · 5 letters · shape CVCVV
Known mistypes of this pair
- ratio ← artio · raito · ratoi · rattio · rratio · rtaio
Frequently Asked Questions
Is swapping "rápido" for "ratio" ever safe?
Frequency check: "rápido" vs "ratio" - which ranks higher?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "rápido" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ratio" - compare definitions side by side with the headword page. Word entry
- This pair ranks #17,922 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "rápido" and "ratio" also get mixed up with nearby pairs, the highest-scored neighbour is "rabi vs ratio". 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 #17,922 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.