FilzvsflyWhat's the difference?

Which to use

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

#24,717
“Filz” frequency rank
#16,704
“fly” frequency rank
41421
confusion score

Side-by-Side Comparison

Feature Filz fly
Definition wirrer Faserstoff, der aus nicht gesponnenen (Tier)haaren oder Wolle durch Zusammenpressen hergestellt wird Fliege

Where the eye mixes Filz and fly

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
Filz
3 ch
fly

Why the eye confuses Filz with fly

A purely visual mix-up. Filz ([fɪlt͡s]) and fly ([flaɪ]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 41421, derived from the frequency rank of both members and their visual similarity.

Filz is recorded at frequency rank #24,717, classified as anoun, pronounced [fɪlt͡s]. fly is at rank #16,704, tagged as anoun, pronounced [flaɪ].

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 41421, this pair ranks #1,479,949 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Filz vs fly

Shared letters: fl. Private to "Filz": iz. Private to "fly": y.

"Filz" · 4 letters · shape CVCC  ·  "fly" · 3 letters · shape CCV

Known mistypes of this pair

  • Filzffilz · fillz · filzz · fizl · fliz · iflz

Frequently Asked Questions

Is swapping "Filz" for "fly" ever safe?
No. They are said differently ([fɪlt͡s] versus [flaɪ]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "Filz" or "fly"?
"fly" is the more common of the two: it sits at frequency rank #16,704 in our German list, against #24,717 for "Filz". 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 "Filz" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fly" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,479,949 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "Filz" and "fly" also get mixed up with nearby pairs, the highest-scored neighbour is "Filz vs fist". 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 #1,479,949 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