Which to use
“der” is a noun and “duper” is a verb - they look or sound alike but fill different roles in a sentence.
- #3,909
- “der” frequency rank
- #30,569
- “duper” frequency rank
- 34478
- confusion score
Side-by-Side Comparison
| Feature | der | duper |
|---|---|---|
| Definition | Dernier, dernière ou dernière fois. | Prendre pour dupe, tromper. |
Where the eye mixes der and duper
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Why the eye confuses der with duper
These two trip readers on the page rather than in the ear: der is \dɛʁ\ while duper is \dy.pe\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 34478, derived from the frequency rank of both members and their visual similarity.
der is recorded at frequency rank #3,909, classified as anoun, pronounced \dɛʁ\. duper is at rank #30,569, tagged as averb, pronounced \dy.pe\.
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 34478, this pair ranks #283,550 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of der vs duper
Shared letters: der. Private to "der": -. Private to "duper": pu.
"der" · 3 letters · shape CVC · "duper" · 5 letters · shape CVCVC
Known mistypes of this pair
- duper ← dduper · dpuer · duepr · duperr · dupper · dupre · udper
Frequently Asked Questions
Is swapping "der" for "duper" ever safe?
Which is more common, "der" or "duper"?
After this comparison
Eye-level mix-up between "der" and "duper" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "der" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "duper" - compare definitions side by side with the headword page. Word entry
- This pair ranks #283,550 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "der" and "duper" also get mixed up with nearby pairs, the highest-scored neighbour is "doper vs duper". 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 #283,550 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.