Which to use
“Fieber” is a noun and “fieser” is an adjective - they look or sound alike but fill different roles in a sentence.
- #5,828
- “Fieber” frequency rank
- #39,341
- “fieser” frequency rank
- 45169
- confusion score
Side-by-Side Comparison
| Feature | Fieber | fieser |
|---|---|---|
| Definition | Erhöhung der Körpertemperatur im Krankheitsfall; Schutzreaktion des Körpers, um Krankheitserreger abzutöten | Nominativ Singular Maskulinum der starken Flexion des Positivs des Adjektivs fies |
Where the eye mixes Fieber and fieser
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. Fieber and fieser follow the identical consonant-vowel pattern (CVVCVC). Same shape at a glance is often the real trap, independent of shared letters.
Why the eye confuses Fieber with fieser
These two trip readers on the page rather than in the ear: Fieber is [ˈfiːbɐ] while fieser is [ˈfiːzɐ]. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - b in “Fieber” becomes s in “fieser”, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 45169, 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]. fieser is at rank #39,341, tagged as anadj, pronounced [ˈfiːzɐ].
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 45169, this pair ranks #1,362,134 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of Fieber vs fieser
Shared letters: efir. Private to "Fieber": b. Private to "fieser": s.
"Fieber" · 6 letters · shape CVVCVC · "fieser" · 6 letters · shape CVVCVC
Known mistypes of this pair
Frequently Asked Questions
Can "Fieber" and "fieser" be used interchangeably?
In ordinary German text, does "Fieber" or "fieser" show up more?
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 "fieser" - compare definitions side by side with the headword page. Word entry
- This pair ranks #1,362,134 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
- "Fieber" and "fieser" also get mixed up with nearby pairs, the highest-scored neighbour is "fieser vs fixer". 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 #1,362,134 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.