Which to use
“DEC” and “diez” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #18,165
- “DEC” frequency rank
- #48,450
- “diez” frequency rank
- 66615
- confusion score
Side-by-Side Comparison
| Feature | DEC | diez |
|---|---|---|
| Definition | Diplôme d’études collégiales. | Forme mutée de tiez par adoucissement (t → d). |
Where the eye mixes DEC and diez
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses DEC with diez
A purely visual mix-up. DEC (\dɛk\) and diez (\ˈdiːɛs\) 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 letter(s) in length. Our composite confusion score for this pair is 66615, derived from the frequency rank of both members and their visual similarity.
DEC is recorded at frequency rank #18,165, classified as anoun, pronounced \dɛk\. diez is at rank #48,450, tagged as anoun, pronounced \ˈdiːɛs\.
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 66615, this pair ranks #67,053 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of DEC vs diez
Shared letters: de. Private to "DEC": c. Private to "diez": iz.
"DEC" · 3 letters · shape CVC · "diez" · 4 letters · shape CVVC
Known mistypes of this pair
- diez ← ddiez · deiz · diezz · dize · idez
Frequently Asked Questions
Can "DEC" and "diez" be used interchangeably?
Which is more common, "DEC" or "diez"?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "DEC" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "diez" - compare definitions side by side with the headword page. Word entry
- This pair ranks #67,053 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "DEC" and "diez" also get mixed up with nearby pairs, the highest-scored neighbour is "diez vs dz". 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 #67,053 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.