Which to use
“fünf” is a num and “Fünfer” is a noun - they look or sound alike but fill different roles in a sentence.
- #442
- “fünf” frequency rank
- #36,942
- “Fünfer” frequency rank
- 37384
- confusion score
Side-by-Side Comparison
| Feature | fünf | Fünfer |
|---|---|---|
| Definition | fünf, die Kardinalzahl zwischen vier und sechs | etwas mit Größe, Wert, Maß oder Nummer 5 |
Where the eye mixes fünf and Fünfer
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Why the eye confuses fünf with Fünfer
These two trip readers on the page rather than in the ear: fünf is [fʏnf] while Fünfer is [ˈfʏnfɐ]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “fünf” sits inside “Fünfer”, and the parts of speech differ too (num vs noun), which is usually the fastest check. Our composite confusion score for this pair is 37384, derived from the frequency rank of both members and their visual similarity.
fünf is recorded at frequency rank #442, classified as anum, pronounced [fʏnf]. 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 37384, this pair ranks #1,591,659 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of fünf vs Fünfer
Shared letters: fnü. Private to "fünf": -. Private to "Fünfer": er.
"fünf" · 4 letters · shape CVCC · "Fünfer" · 6 letters · shape CVCCVC
Frequently Asked Questions
Is swapping "fünf" for "Fünfer" ever safe?
Which is more common, "fünf" or "Fünfer"?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "fünf" 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 #1,591,659 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
- "fünf" and "Fünfer" also get mixed up with nearby pairs, the highest-scored neighbour is "fender vs Fünfer". Nearby pair
Confusion rank #1,591,659 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.