Which to use
“défection” and “détection” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #23,525
- “défection” frequency rank
- #9,988
- “détection” frequency rank
- 33513
- confusion score
Side-by-Side Comparison
| Feature | défection | détection |
|---|---|---|
| Definition | Fait d’abandonner un organisme auquel on était lié. | Action de détecter un objet, un corps ou une substance à l’aide d’un appareil. |
Where the eye mixes défection and détection
Muted = shared; highlighted = the visual trap. They share 8 letters in sequence.
Why the eye confuses défection with détection
A purely visual mix-up. défection (\de.fɛk.sjɔ̃\) and détection (\de.tɛk.sjɔ̃\) 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 - f in “défection” becomes t in “détection”. Our composite confusion score for this pair is 33513, derived from the frequency rank of both members and their visual similarity.
défection is recorded at frequency rank #23,525, classified as anoun, pronounced \de.fɛk.sjɔ̃\. détection is at rank #9,988, tagged as anoun, pronounced \de.tɛk.sjɔ̃\.
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 33513, this pair ranks #290,145 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of défection vs détection
Shared letters: cdeinoté. Private to "défection": f. Private to "détection": -.
"défection" · 9 letters · shape CVCVCCVVC · "détection" · 9 letters · shape CVCVCCVVC
Frequently Asked Questions
Is swapping "défection" for "détection" ever safe?
Which is more common, "défection" or "détection"?
What to do next
Eye-level mix-up between "défection" and "détection" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "défection" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "détection" - compare definitions side by side with the headword page. Word entry
- This pair ranks #290,145 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "défection" and "détection" also get mixed up with nearby pairs, the highest-scored neighbour is "défection vs défections". Nearby pair
Confusion rank #290,145 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.