FüllervsFünferWhat's the difference?

Which to use

“Füller” and “Fünfer” are a confusable German pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#34,108
“Füller” frequency rank
#36,942
“Fünfer” frequency rank
71050
confusion score

Side-by-Side Comparison

Feature Füller Fünfer
Definition Füllfederhalter, Schreibgerät, das einen Tank für Tinte enthält und somit andauerndes Schreiben ermöglicht etwas mit Größe, Wert, Maß oder Nummer 5

Where the eye mixes Füller and Fünfer

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

6 ch
Füller
6 ch
Fünfer

Visual trap between Füller and Fünfer

A purely visual mix-up. Füller ([ˈfʏlɐ]) and Fünfer ([ˈfʏnfɐ]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 71050, derived from the frequency rank of both members and their visual similarity.

Füller is recorded at frequency rank #34,108, classified as anoun, pronounced [ˈfʏlɐ]. Fünfer is at rank #36,942, tagged as anoun, pronounced [ˈfʏnfɐ].

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 71050, this pair ranks #428,216 of 2,006,359 scored German confusable pairs - among the most confusable pairs.

Orthographic DNA of Füller vs Fünfer

Shared letters: efrü. Private to "Füller": l. Private to "Fünfer": n.

"Füller" · 6 letters · shape CVCCVC  ·  "Fünfer" · 6 letters · shape CVCCVC

Frequently Asked Questions

Is swapping "Füller" for "Fünfer" ever safe?
No. They are said differently ([ˈfʏlɐ] versus [ˈfʏnfɐ]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "Füller" vs "Fünfer" - which ranks higher?
"Füller" is the more common of the two: it sits at frequency rank #34,108 in our German list, against #36,942 for "Fünfer". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Eye-level mix-up between "Füller" and "Fünfer" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "Füller" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Fünfer" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #428,216 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "Füller" and "Fünfer" also get mixed up with nearby pairs, the highest-scored neighbour is "fender vs Fünfer". Nearby pair

Confusion rank #428,216 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