Which to use
“radiactivo” and “radioactivo” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #39,415
- “radiactivo” frequency rank
- #40,495
- “radioactivo” frequency rank
- 79910
- confusion score
Side-by-Side Comparison
| Feature | radiactivo | radioactivo |
|---|---|---|
| Definition | Se dice de los cuerpos que presentan radiactividad. | Variante de radiactivo. |
Where the eye mixes radiactivo and radioactivo
Muted = shared; highlighted = the visual trap. They share 10 letters in sequence. radiactivo runs 10 letters (CVCVVCCVCV) against radioactivo's 11 (CVCVVVCCVCV) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between radiactivo and radioactivo
A purely visual mix-up. radiactivo ([rað̞jakˈt̪iβ̞o]) and radioactivo ([rað̞joakˈt̪iβ̞o]) 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 79910, derived from the frequency rank of both members and their visual similarity.
radiactivo is recorded at frequency rank #39,415, classified as anadj, pronounced [rað̞jakˈt̪iβ̞o]. radioactivo is at rank #40,495, tagged as anadj, pronounced [rað̞joakˈt̪iβ̞o].
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 79910, this pair ranks #12,360 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of radiactivo vs radioactivo
Shared letters: acdiortv. Private to "radiactivo": -. Private to "radioactivo": -.
"radiactivo" · 10 letters · shape CVCVVCCVCV · "radioactivo" · 11 letters · shape CVCVVVCCVCV
Known mistypes of this pair
- radiactivo ← ardiactivo · radaictivo · raddiactivo · radiacctivo · radiacitvo · radiactibo · radiactiov · radiactivvo
- radioactivo ← ardioactivo · raddioactivo · radiaoctivo · radioacctivo · radioacitvo · radioactibo · radioactiov · radioactivvo
Frequently Asked Questions
Can "radiactivo" and "radioactivo" be used interchangeably?
Which is more common, "radiactivo" or "radioactivo"?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "radiactivo" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "radioactivo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #12,360 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "radiactivo" and "radioactivo" also get mixed up with nearby pairs, the highest-scored neighbour is "radiactiva vs radioactivo". 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 #12,360 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.