ergänzendvsErgänzungWhich spelling fits?

Quick tell: ergänzend is a verb, Ergänzung is a noun, so they fill different roles in a sentence.

Which to use

“ergänzend” is a verb and “Ergänzung” is a noun - they look or sound alike but fill different roles in a sentence.

#16,981
“ergänzend” frequency rank
#6,292
“Ergänzung” frequency rank
23273
confusion score

Side-by-Side Comparison

Feature ergänzend Ergänzung
Definition Partizip Präsens des Verbs ergänzen Akt der Hinzufügung fehlender Elemente zur Vervollständigung einer bestehenden Menge

Where the eye mixes ergänzend and Ergänzung

Muted = shared; highlighted = the visual trap. They share 7 letters in sequence. ergänzend and Ergänzung follow the identical consonant-vowel pattern (VCCVCCVCC). Same shape at a glance is often the real trap, independent of shared letters.

9 ch
ergänzend
9 ch
Ergänzung

Look-alike desk: ergänzend vs Ergänzung

These two trip readers on the page rather than in the ear: ergänzend is [ɛɐ̯ˈɡɛnt͡sn̩t] while Ergänzung is [ɛɐ̯ˈɡɛnt͡sʊŋ]. 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 (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 23273, derived from the frequency rank of both members and their visual similarity.

ergänzend is recorded at frequency rank #16,981, classified as averb, pronounced [ɛɐ̯ˈɡɛnt͡sn̩t]. Ergänzung is at rank #6,292, tagged as anoun, pronounced [ɛɐ̯ˈɡɛnt͡sʊŋ].

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 23273, this pair ranks #1,863,419 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ergänzend vs Ergänzung

Shared letters: egnrzä. Private to "ergänzend": d. Private to "Ergänzung": u.

"ergänzend" · 9 letters · shape VCCVCCVCC  ·  "Ergänzung" · 9 letters · shape VCCVCCVCC

Frequently Asked Questions

Is swapping "ergänzend" for "Ergänzung" ever safe?
No - they are not even the same part of speech. "ergänzend" is a verb and "Ergänzung" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "ergänzend" or "Ergänzung" show up more?
"Ergänzung" is the more common of the two: it sits at frequency rank #6,292 in our German list, against #16,981 for "ergänzend". 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 "ergänzend" and "Ergänzung" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "ergänzend" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Ergänzung" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,863,419 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "ergänzend" and "Ergänzung" also get mixed up with nearby pairs, the highest-scored neighbour is "ergänze vs ergänzend". Nearby pair

Confusion rank #1,863,419 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