flervsFüllerWhich spelling fits?

Quick tell: fler is a adjective, Füller is a noun, so they fill different roles in a sentence.

Which to use

“fler” is an adjective and “Füller” is a noun - they look or sound alike but fill different roles in a sentence.

#32,036
“fler” frequency rank
#34,108
“Füller” frequency rank
66144
confusion score

Side-by-Side Comparison

Feature fler Füller
Definition mehr, eine größere Anzahl (als) Füllfederhalter, Schreibgerät, das einen Tank für Tinte enthält und somit andauerndes Schreiben ermöglicht

Where the eye mixes fler and Füller

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

4 ch
fler
6 ch
Füller

Visual trap between fler and Füller

These two trip readers on the page rather than in the ear: fler is [ˈfleːr] while Füller is [ˈfʏlɐ]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 66144, derived from the frequency rank of both members and their visual similarity.

fler is recorded at frequency rank #32,036, classified as anadj, pronounced [ˈfleːr]. Füller is at rank #34,108, tagged as anoun, pronounced [ˈfʏlɐ].

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 66144, this pair ranks #583,140 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fler vs Füller

Shared letters: eflr. Private to "fler": -. Private to "Füller": ü.

"fler" · 4 letters · shape CCVC  ·  "Füller" · 6 letters · shape CVCCVC

Known mistypes of this pair

  • flerfelr · ffler · flerr · fller · flre · lfer

Frequently Asked Questions

Do "fler" and "Füller" mean the same thing in a sentence?
No - they are not even the same part of speech. "fler" is an adjective and "Füller" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "fler" vs "Füller" - which ranks higher?
"fler" is the more common of the two: it sits at frequency rank #32,036 in our German list, against #34,108 for "Füller". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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 "fler" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Füller" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #583,140 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "fler" and "Füller" also get mixed up with nearby pairs, the highest-scored neighbour is "fler vs Flyern". 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 #583,140 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