Which to use
“radiactiva” and “radiactivos” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #45,543
- “radiactiva” frequency rank
- #42,648
- “radiactivos” frequency rank
- 88191
- confusion score
Side-by-Side Comparison
| Feature | radiactiva | radiactivos |
|---|---|---|
| Definition | Forma del femenino singular de radiactivo. | Forma del masculino plural de radiactivo. |
Where the eye mixes radiactiva and radiactivos
Muted = shared; highlighted = the visual trap. They share 9 letters in sequence. radiactiva runs 10 letters (CVCVVCCVCV) against radiactivos's 11 (CVCVVCCVCVC) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses radiactiva with radiactivos
A purely visual mix-up. radiactiva ([rað̞jakˈt̪iβ̞a]) and radiactivos ([rað̞jakˈt̪iβ̞os]) 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 88191, 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]. radiactivos is at rank #42,648, tagged as anadj, pronounced [rað̞jakˈt̪iβ̞os].
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 88191, this pair ranks #3,917 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of radiactiva vs radiactivos
Shared letters: acdirtv. Private to "radiactiva": -. Private to "radiactivos": os.
"radiactiva" · 10 letters · shape CVCVVCCVCV · "radiactivos" · 11 letters · shape CVCVVCCVCVC
Known mistypes of this pair
- radiactiva ← ardiactiva · radaictiva · raddiactiva · radiacctiva · radiacitva · radiactiav · radiactiba · radiactivva
- radiactivos ← ardiactivos · radaictivos · raddiactivos · radiacctivos · radiacitvos · radiactibos · radiactiovs · radiactivoss
Frequently Asked Questions
Is swapping "radiactiva" for "radiactivos" ever safe?
Frequency check: "radiactiva" vs "radiactivos" - which ranks higher?
What to do next
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 "radiactivos" - compare definitions side by side with the headword page. Word entry
- This pair ranks #3,917 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "radiactiva" and "radiactivos" 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 #3,917 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.