Which to use
“radis” and “radon” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #29,099
- “radis” frequency rank
- #44,667
- “radon” frequency rank
- 73766
- confusion score
Side-by-Side Comparison
| Feature | radis | radon |
|---|---|---|
| Definition | Légume potager du genre Raphanus (famille des Brassicaceae), dont la racine est comestible. | Élément chimique de numéro atomique 86 et de symbole Rn qui fait partie de la série chimique des gaz rares. |
Where the eye mixes radis and radon
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. radis and radon follow the identical consonant-vowel pattern (CVCVC). Same shape at a glance is often the real trap, independent of shared letters.
Why the eye confuses radis with radon
A purely visual mix-up. radis (\ʁa.di\) and radon (\ʁa.dɔ̃\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 73766, derived from the frequency rank of both members and their visual similarity.
radis is recorded at frequency rank #29,099, classified as anoun, pronounced \ʁa.di\. radon is at rank #44,667, tagged as anoun, pronounced \ʁa.dɔ̃\.
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 73766, this pair ranks #39,342 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of radis vs radon
Shared letters: adr. Private to "radis": is. Private to "radon": no.
"radis" · 5 letters · shape CVCVC · "radon" · 5 letters · shape CVCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "radis" for "radon" ever safe?
Frequency check: "radis" vs "radon" - which ranks higher?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "radis" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "radon" - compare definitions side by side with the headword page. Word entry
- This pair ranks #39,342 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "radis" and "radon" also get mixed up with nearby pairs, the highest-scored neighbour is "radon vs ramen". 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 #39,342 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.