DDT vs Dex, What's the Difference?

Which to use

“DDT” and “Dex” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#47,826
“DDT” frequency rank: #43,878
“Dex” frequency rank: 91704
confusion score

Side-by-Side Comparison

Feature	DDT	Dex
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.	Dieu

Where the eye mixes DDT and Dex

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. DDT (CCC) and Dex (CVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

3 ch

DDT

3 ch

Dex

Look-alike desk: DDT vs Dex

A purely visual mix-up. DDT (\de de te\) and Dex (\'de.us\) 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 91704, 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\. Dex is at rank #43,878, tagged as anoun, pronounced \'de.us\.

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 91704, this pair ranks #3,595 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of DDT vs Dex

Shared letters: d. Private to "DDT": t. Private to "Dex": ex.

"DDT" · 3 letters · shape CCC · "Dex" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "DDT" for "Dex" ever safe?

No. They are said differently (\de de te\ versus \'de.us\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

In ordinary French text, does "DDT" or "Dex" show up more?

"Dex" is the more common of the two: it sits at frequency rank #43,878 in our French list, against #47,826 for "DDT". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "DDT" and "Dex" is sorted above. Next: full entries or other pairs that share a letter shape.

Full dictionary entry for "DDT" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "Dex" - compare definitions side by side with the headword page. Word entry
This pair ranks #3,595 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"DDT" and "Dex" also get mixed up with nearby pairs, the highest-scored neighbour is "DCI vs DDT". Nearby pair

Confusion rank #3,595 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.