Which to use
“radiação” and “redação” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #5,138
- “radiação” frequency rank
- #4,514
- “redação” frequency rank
- 9652
- confusion score
Side-by-Side Comparison
| Feature | radiação | redação |
|---|---|---|
| Definition | ato ou efeito de radiar (luz) | ato ou efeito de redigir |
Where the eye mixes radiação and redação
Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. radiação runs 8 letters (CVCVVCVV) against redação's 7 (CVCVCVV) - the length gap alone is often enough to separate them once you know to check it.
Look-alike desk: radiação vs redação
A purely visual mix-up. radiação (/Rɐ.djɐ.ˈsɐ̃w̃/) and redação (/Rɨ.da.ˈsɐ̃w̃/) 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 9652, derived from the frequency rank of both members and their visual similarity.
radiação is recorded at frequency rank #5,138, classified as anoun, pronounced /Rɐ.djɐ.ˈsɐ̃w̃/. redação is at rank #4,514, tagged as anoun, pronounced /Rɨ.da.ˈsɐ̃w̃/.
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 9652, this pair ranks #63,712 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of radiação vs redação
Shared letters: adorãç. Private to "radiação": i. Private to "redação": e.
"radiação" · 8 letters · shape CVCVVCVV · "redação" · 7 letters · shape CVCVCVV
Frequently Asked Questions
Is swapping "radiação" for "redação" ever safe?
In ordinary Portuguese text, does "radiação" or "redação" show up more?
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 "radiação" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "redação" - compare definitions side by side with the headword page. Word entry
- This pair ranks #63,712 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "radiação" and "redação" also get mixed up with nearby pairs, the highest-scored neighbour is "redação vs refração". Nearby pair
Confusion rank #63,712 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.