FiebervsFliegerWhat's the difference?

Which to use

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

#5,828
“Fieber” frequency rank
#7,468
“Flieger” frequency rank
13296
confusion score

Side-by-Side Comparison

Feature Fieber Flieger
Definition Erhöhung der Körpertemperatur im Krankheitsfall; Schutzreaktion des Körpers, um Krankheitserreger abzutöten Führer eines Fluggerätes

Where the eye mixes Fieber and Flieger

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. Fieber runs 6 letters (CVVCVC) against Flieger's 7 (CCVVCVC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
Fieber
7 ch
Flieger

Why the eye confuses Fieber with Flieger

A purely visual mix-up. Fieber ([ˈfiːbɐ]) and Flieger ([ˈfliːɡɐ]) 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 13296, derived from the frequency rank of both members and their visual similarity.

Fieber is recorded at frequency rank #5,828, classified as anoun, pronounced [ˈfiːbɐ]. Flieger is at rank #7,468, tagged as anoun, pronounced [ˈfliːɡɐ].

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 13296, this pair ranks #1,958,884 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of Fieber vs Flieger

Shared letters: efir. Private to "Fieber": b. Private to "Flieger": gl.

"Fieber" · 6 letters · shape CVVCVC  ·  "Flieger" · 7 letters · shape CCVVCVC

Known mistypes of this pair

  • Fieber ← feiber · ffieber · fibeer · fiebber · fieberr · fiebre · fieebr · ifeber
  • Flieger ← fflieger · fileger · fleiger · flieegr · fliegerr · fliegger · fliegre · fligeer

Frequently Asked Questions

Do "Fieber" and "Flieger" mean the same thing in a sentence?
No. They are said differently ([ˈfiːbɐ] versus [ˈfliːɡɐ]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary German text, does "Fieber" or "Flieger" show up more?
"Fieber" is the more common of the two: it sits at frequency rank #5,828 in our German list, against #7,468 for "Flieger". 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 "Fieber" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Flieger" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,958,884 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "Fieber" and "Flieger" also get mixed up with nearby pairs, the highest-scored neighbour is "Flieger vs Flipper". 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 #1,958,884 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