Which to use
“radiactiva” and “radiactivo” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #45,543
- “radiactiva” frequency rank
- #39,415
- “radiactivo” frequency rank
- 84958
- confusion score
Side-by-Side Comparison
| Feature | radiactiva | radiactivo |
|---|---|---|
| Definition | Forma del femenino singular de radiactivo. | Se dice de los cuerpos que presentan radiactividad. |
Where the eye mixes radiactiva and radiactivo
Muted = shared; highlighted = the visual trap. They share 9 letters in sequence. radiactiva and radiactivo follow the identical consonant-vowel pattern (CVCVVCCVCV). Same shape at a glance is often the real trap, independent of shared letters.
Why the eye confuses radiactiva with radiactivo
A purely visual mix-up. radiactiva ([rað̞jakˈt̪iβ̞a]) and radiactivo ([rað̞jakˈt̪iβ̞o]) 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 a single letter - a in “radiactiva” becomes o in “radiactivo”. Our composite confusion score for this pair is 84958, derived from the frequency rank of both members and their visual similarity.
radiactiva is recorded at frequency rank #45,543, classified as anadj, pronounced [rað̞jakˈt̪iβ̞a]. radiactivo is at rank #39,415, tagged as anadj, pronounced [rað̞jakˈt̪iβ̞o].
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 84958, this pair ranks #6,536 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of radiactiva vs radiactivo
Shared letters: acdirtv. Private to "radiactiva": -. Private to "radiactivo": o.
"radiactiva" · 10 letters · shape CVCVVCCVCV · "radiactivo" · 10 letters · shape CVCVVCCVCV
Known mistypes of this pair
- radiactiva ← ardiactiva · radaictiva · raddiactiva · radiacctiva · radiacitva · radiactiav · radiactiba · radiactivva
- radiactivo ← ardiactivo · radaictivo · raddiactivo · radiacctivo · radiacitvo · radiactibo · radiactiov · radiactivvo
Frequently Asked Questions
Is swapping "radiactiva" for "radiactivo" ever safe?
In ordinary Spanish text, does "radiactiva" or "radiactivo" show up more?
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 "radiactiva" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "radiactivo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #6,536 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "radiactiva" and "radiactivo" also get mixed up with nearby pairs, the highest-scored neighbour is "radiactiva vs radiactivos". 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 #6,536 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.