Which to use
“radioaktiv” and “radioaktive” are a confusable German pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #44,158
- “radioaktiv” frequency rank
- #28,341
- “radioaktive” frequency rank
- 72499
- confusion score
Side-by-Side Comparison
| Feature | radioaktiv | radioaktive |
|---|---|---|
| Definition | Radioaktivität aufweisend | Nominativ Singular Femininum der starken Deklination des Positivs des Adjektivs radioaktiv |
Where the eye mixes radioaktiv and radioaktive
Muted = shared; highlighted = the visual trap. They share 10 letters in sequence. radioaktiv runs 10 letters (CVCVVVCCVC) against radioaktive's 11 (CVCVVVCCVCV) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between radioaktiv and radioaktive
A purely visual mix-up. radioaktiv ([ˌʁadi̯oʔakˈtiːf]) and radioaktive ([ˌʁadi̯oʔakˈtiːvə]) 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 extra letter(s) - “radioaktiv” sits inside “radioaktive”. Our composite confusion score for this pair is 72499, derived from the frequency rank of both members and their visual similarity.
radioaktiv is recorded at frequency rank #44,158, classified as anadj, pronounced [ˌʁadi̯oʔakˈtiːf]. radioaktive is at rank #28,341, tagged as anadj, pronounced [ˌʁadi̯oʔakˈtiːvə].
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 72499, this pair ranks #386,705 of 2,006,359 scored German confusable pairs - among the most confusable pairs.
Orthographic DNA of radioaktiv vs radioaktive
Shared letters: adikortv. Private to "radioaktiv": -. Private to "radioaktive": e.
"radioaktiv" · 10 letters · shape CVCVVVCCVC · "radioaktive" · 11 letters · shape CVCVVVCCVCV
Known mistypes of this pair
- radioaktiv ← ardioaktiv · raddioaktiv · radiaoktiv · radioakitv · radioakktiv · radioaktivv · radioakttiv · radioaktvi
- radioaktive ← ardioaktive · raddioaktive · radiaoktive · radioakitve · radioakktive · radioaktiev · radioaktivve · radioakttive
Frequently Asked Questions
Is swapping "radioaktiv" for "radioaktive" ever safe?
Frequency check: "radioaktiv" vs "radioaktive" - 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 "radioaktiv" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "radioaktive" - compare definitions side by side with the headword page. Word entry
- This pair ranks #386,705 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
- "radioaktiv" and "radioaktive" also get mixed up with nearby pairs, the highest-scored neighbour is "radioaktiv vs radioaktiver". 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 #386,705 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.