Which to use
“DDT” and “der” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #47,826
- “DDT” frequency rank
- #3,909
- “der” frequency rank
- 51735
- confusion score
Side-by-Side Comparison
| Feature | DDT | der |
|---|---|---|
| Definition | Dichlorodiphényltrichloroéthane, insecticide de contact neurotoxique de la famille des organochlorés, dont le nom scientifique est 1,1,1-trichloro-2,2-bis(4-chlorophényl)-éthane. | Dernier, dernière ou dernière fois. |
Where the eye mixes DDT and der
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. DDT (CCC) and der (CVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Why the eye confuses DDT with der
A purely visual mix-up. DDT (\de de te\) and der (\dɛʁ\) 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 51735, derived from the frequency rank of both members and their visual similarity.
DDT is recorded at frequency rank #47,826, classified as anoun, pronounced \de de te\. der is at rank #3,909, tagged as anoun, pronounced \dɛʁ\.
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 51735, this pair ranks #152,846 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of DDT vs der
Shared letters: d. Private to "DDT": t. Private to "der": er.
"DDT" · 3 letters · shape CCC · "der" · 3 letters · shape CVC
Frequently Asked Questions
Can "DDT" and "der" be used interchangeably?
In ordinary French text, does "DDT" or "der" show up more?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "DDT" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "der" - compare definitions side by side with the headword page. Word entry
- This pair ranks #152,846 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "DDT" and "der" also get mixed up with nearby pairs, the highest-scored neighbour is "DCI vs DDT". Nearby pair
Confusion rank #152,846 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.