ergänzenvsErgänzungConfusable pair

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

Which to use

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

#7,312
“ergänzen” frequency rank
#6,292
“Ergänzung” frequency rank
13604
confusion score

Side-by-Side Comparison

Feature ergänzen Ergänzung
Definition zur Bereicherung hinzufügen Akt der Hinzufügung fehlender Elemente zur Vervollständigung einer bestehenden Menge

Where the eye mixes ergänzen and Ergänzung

Muted = shared; highlighted = the visual trap. They share 7 letters in sequence. ergänzen runs 8 letters (VCCVCCVC) against Ergänzung's 9 (VCCVCCVCC) - the length gap alone is often enough to separate them once you know to check it.

8 ch
ergänzen
9 ch
Ergänzung

Look-alike desk: ergänzen vs Ergänzung

These two trip readers on the page rather than in the ear: ergänzen is [ɛɐ̯ˈɡɛnt͡sn̩] while Ergänzung is [ɛɐ̯ˈɡɛnt͡sʊŋ]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 13604, derived from the frequency rank of both members and their visual similarity.

ergänzen is recorded at frequency rank #7,312, classified as averb, pronounced [ɛɐ̯ˈɡɛnt͡sn̩]. 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 13604, this pair ranks #1,956,895 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ergänzen vs Ergänzung

Shared letters: egnrzä. Private to "ergänzen": -. Private to "Ergänzung": u.

"ergänzen" · 8 letters · shape VCCVCCVC  ·  "Ergänzung" · 9 letters · shape VCCVCCVCC

Frequently Asked Questions

Do "ergänzen" and "Ergänzung" mean the same thing in a sentence?
No - they are not even the same part of speech. "ergänzen" is a verb and "Ergänzung" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "ergänzen" or "Ergänzung"?
"Ergänzung" is the more common of the two: it sits at frequency rank #6,292 in our German list, against #7,312 for "ergänzen". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "ergänzen" 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 #1,956,895 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "ergänzen" and "Ergänzung" also get mixed up with nearby pairs, the highest-scored neighbour is "ergänze vs ergänzen". Nearby pair

Confusion rank #1,956,895 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