derenvsDüsenWhat's the difference?

Quick tell: deren is a unknown, Düsen is a noun, so they fill different roles in a sentence.

Which to use

“deren” is an unknown and “Düsen” is a noun - they look or sound alike but fill different roles in a sentence.

#326
“deren” frequency rank
#36,893
“Düsen” frequency rank
37219
confusion score

Side-by-Side Comparison

Feature deren Düsen
Definition Genitiv Singular des Pronomens die Nominativ Plural des Substantivs Düse

Where the eye mixes deren and Düsen

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. deren and Düsen follow the identical consonant-vowel pattern (CVCVC). Same shape at a glance is often the real trap, independent of shared letters.

5 ch
deren
5 ch
Düsen

Why the eye confuses deren with Düsen

These two trip readers on the page rather than in the ear: deren is [ˈdeːʁən] while Düsen is [ˈdyːzn̩]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (unknown vs noun), which is usually the fastest check. Our composite confusion score for this pair is 37219, derived from the frequency rank of both members and their visual similarity.

deren is recorded at frequency rank #326, classified as anunknown, pronounced [ˈdeːʁən]. Düsen is at rank #36,893, tagged as anoun, pronounced [ˈdyːzn̩].

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 37219, this pair ranks #1,595,819 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of deren vs Düsen

Shared letters: den. Private to "deren": r. Private to "Düsen": sü.

"deren" · 5 letters · shape CVCVC  ·  "Düsen" · 5 letters · shape CVCVC

Known mistypes of this pair

  • deren ← dderen · deern · derenn · derne · derren · dreen · edren

Frequently Asked Questions

Is swapping "deren" for "Düsen" ever safe?
No - they are not even the same part of speech. "deren" is an unknown and "Düsen" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "deren" or "Düsen" show up more?
"deren" is the more common of the two: it sits at frequency rank #326 in our German list, against #36,893 for "Düsen". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "deren" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Düsen" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,595,819 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "deren" and "Düsen" also get mixed up with nearby pairs, the highest-scored neighbour is "dusch vs Düsen". 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 #1,595,819 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list