festervsfeverWhich spelling fits?

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

Which to use

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

#6,534
“fester” frequency rank
#38,100
“fever” frequency rank
44634
confusion score

Side-by-Side Comparison

Feature fester fever
Definition Nominativ Singular Maskulinum der starken Deklination des Positivs des Adjektivs fest Fieber

Where the eye mixes fester and fever

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

6 ch
fester
5 ch
fever

Why the eye confuses fester with fever

These two trip readers on the page rather than in the ear: fester is [ˈfɛstɐ] while fever is [ˈfiːvə]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 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 44634, derived from the frequency rank of both members and their visual similarity.

fester is recorded at frequency rank #6,534, classified as anadj, pronounced [ˈfɛstɐ]. fever is at rank #38,100, tagged as anoun, pronounced [ˈfiːvə].

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 44634, this pair ranks #1,379,812 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fester vs fever

Shared letters: efr. Private to "fester": st. Private to "fever": v.

"fester" · 6 letters · shape CVCCVC  ·  "fever" · 5 letters · shape CVCVC

Known mistypes of this pair

  • festerefster · fesetr · fesster · festerr · festre · festter · fetser · ffester
  • feverefver · feevr · feverr · fevre · fevver · ffever · fveer

Frequently Asked Questions

Can "fester" and "fever" be used interchangeably?
No - they are not even the same part of speech. "fester" is an adjective and "fever" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "fester" vs "fever" - which ranks higher?
"fester" is the more common of the two: it sits at frequency rank #6,534 in our German list, against #38,100 for "fever". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "fester" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fever" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,379,812 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "fester" and "fever" also get mixed up with nearby pairs, the highest-scored neighbour is "fever 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 #1,379,812 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